Step 1:
The first step to converting 215107720.15984 to a fraction is to re-write 215107720.15984 in the form p/q where p and q are both positive integers. To start with, 215107720.15984 can be written as simply 215107720.15984/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 215107720.15984, which in this case is 5. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 215107720.15984/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 215107720.15984/1 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 215107720.15984 as a fraction:
215107720/1 / 1