These numbers are from another schematic and article titled: How to Build a Sine Wave Generator with a 555 Timer Chip
And I was never very good with math
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You can change the frequency of the output signal by changing the values of the RC network. If you increase the values of the RC network, this decreases the frequency. Likewise, if you decrease the values of the RC network, you increase the frequency.
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I wanted a 60hz output cycle so could I take the 1st set of figures and divide by 10 ? Would it be both the R and C or just one ?
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To create a 6Hz signal, R1= 10MΩ and C= 10nF.

To create a 600Hz signal, R1= 100KΩ and C= 10nF.

To create a 134Hz signal, R1= 470KΩ and C= 10nF.

To create a 1.7KHz signal, R1= 33KΩ and C= 10nF.

To create a 43KHz signal, R1= 1KΩ and C= 10nF.

To create a 180KHz signal, R1= 150Ω and C= 10nF.

To create a 252KHz signal, R1= 100Ω and C= 10nF.

 

To create a 6Hz signal, R1= 10MΩ and C= 10nF.

It does depend on the other resistor as well but, assuming the other resistor is very small compared to R1 as required for close to 50:50 duty cycle, then 1MΩ and 10nF will give about 72Hz.
To get closer use 12nF and 1MΩ or 10nF and 1.2MΩ

 

This would go much better with a link to the circuit you are working from. I found the link. When you change the frequency of the 555 in astable mode you also need to change the LC network. The link covers things well and it is important to understand what is going on.

And I was never very good with math

Unfortunately math is the language of electronics so you may want to work on your math skills. While I was never keen on math my father taught me either learn math skills or start thinking about a career outside engineering.

Ron

 

You forgot to post your schematic. A 555 oscillator usually uses two resistors and pin 7 but another 555 oscillator uses only one resistor connected to the output pin 3.

I think your calculation is for two resistors. The second missing resistor should be 0.24 times the value of the resistor you mention: 1M + 240k and 10nF= 60Hz. The very simple formula is in the datasheet.

 

And I was never very good with math

Challenge yourself to get better. I do as many calculations as I can in my head so I don't lose the knack. I'm old enough to have used a slide rule in high school and college, so it's easier for me to keep track of decimal places and challenge flubbed calculations on a calculator when the results don't make sense.

 

The formula in The Link tutorial is wrong. It makes 72Hz, not 60Hz.

 

Well, I'll be darned, ACA has an online calculator. HOORAY ! And where can I leave a tip ?
That will be fun to play with.

Challenge yourself to get better. I do as many calculations as I can in my head so I don't lose the knack. I'm old enough to have used a slide rule in high school and college, so it's easier for me to keep track of decimal places and challenge flubbed calculations on a calculator when the results don't make sense.

I can do some of them but you're correct about the decimals giving me fits. This calculator is a blessing.