Step 1:
The first step to converting 15795.780099457 to a fraction is to re-write 15795.780099457 in the form p/q where p and q are both positive integers. To start with, 15795.780099457 can be written as simply 15795.780099457/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 15795.780099457, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 15795.780099457/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 15795.780099457/1 each by 1000000000:
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 15795.780099457 as a fraction:
142162/9 / 1