Step 1:
The first step to converting 6258888351.9888 to a fraction is to re-write 6258888351.9888 in the form p/q where p and q are both positive integers. To start with, 6258888351.9888 can be written as simply 6258888351.9888/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 6258888351.9888, which in this case is 4. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 6258888351.9888/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 6258888351.9888/1 each by 10000:
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 6258888351.9888 as a fraction:
6258888351/1 / 1