I am now working on a question that says, 5. A microphone has an output power of 45 dBm, the output power in Watts is; A. 5.6 mW B. 31.6 μW C. 5.6 nW D. 31.6 nW E. None of the above i found the formula to convert dBm to watts which is P(Watts)= 10^(dB/10)/1000 i dont actually know exactly what is the formula saying apart from the divide by 1000 part because 1watt = 1000mV 10^(-45/10)/1000= 0.0000000316227766 Watts but then i multiplied the Ans by various submulitples to get me an answer that are in the options. i did 0.0000000316227766 x 10^9(nanowatts)= 31.6nW is this the correct way of getting the answer?