Step 1:
The first step to converting 560420.59999912 to a fraction is to re-write 560420.59999912 in the form p/q where p and q are both positive integers. To start with, 560420.59999912 can be written as simply 560420.59999912/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 560420.59999912, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 560420.59999912/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 560420.59999912/1 each by 100000000:
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 560420.59999912 as a fraction:
560421/1 / 1