which is has to be a counter(or anything that can be work with clock signal) that starts from 0 to 90 (in decimal number)

and it has to be addend by 3. (ex. 0, 3, 6 , ... 90)

I was trying to make a circuit like this, (plz look at the image I uploaded)

I connected 74_190 counter with a a 74_283 adder, so when it counts up with 1, adder could add with 2 so finally i can get add 3.

but sadly when I run it, it just adds up with +1.

How can I figure this out? I tried to slove this problem for 3 days but did not... Pleas help!

#1