Step 1:
The first step to converting 218899.21815311 to a fraction is to re-write 218899.21815311 in the form p/q where p and q are both positive integers. To start with, 218899.21815311 can be written as simply 218899.21815311/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 218899.21815311, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 218899.21815311/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 218899.21815311/1 each by 100000000:
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 218899.21815311 as a fraction:
218899/1 / 1