Step 1:
The first step to converting 161575.5400664 to a fraction is to re-write 161575.5400664 in the form p/q where p and q are both positive integers. To start with, 161575.5400664 can be written as simply 161575.5400664/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 161575.5400664, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 161575.5400664/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 161575.5400664/1 each by 10000000:
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 161575.5400664 as a fraction:
323151/2 / 1