Step 1:
The first step to converting 3402166.405512 to a fraction is to re-write 3402166.405512 in the form p/q where p and q are both positive integers. To start with, 3402166.405512 can be written as simply 3402166.405512/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 3402166.405512, which in this case is 6. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 3402166.405512/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 3402166.405512/1 each by 1000000:
Step 3:
Now the last step is to simplify the fraction (if possible) by finding similar factors and cancelling them out, which leads to the following answer for 3402166.405512 as a fraction:
3402166/1 / 1