Step 1:
The first step to converting 21901776.345989 to a fraction is to re-write 21901776.345989 in the form p/q where p and q are both positive integers. To start with, 21901776.345989 can be written as simply 21901776.345989/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 21901776.345989, which in this case is 6. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 21901776.345989/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 21901776.345989/1 each by 1000000:
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 21901776.345989 as a fraction:
21901776/1 / 1