Step 1:
The first step to converting 516121215.01912 to a fraction is to re-write 516121215.01912 in the form p/q where p and q are both positive integers. To start with, 516121215.01912 can be written as simply 516121215.01912/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 516121215.01912, which in this case is 5. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 516121215.01912/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 516121215.01912/1 each by 100000:
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 516121215.01912 as a fraction:
516121215/1 / 1