Step 1:
The first step to converting 7988100.6421424 to a fraction is to re-write 7988100.6421424 in the form p/q where p and q are both positive integers. To start with, 7988100.6421424 can be written as simply 7988100.6421424/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 7988100.6421424, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 7988100.6421424/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 7988100.6421424/1 each by 10000000:
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 7988100.6421424 as a fraction:
7988100/1 / 1