Step 1:
The first step to converting 990549871.89058 to a fraction is to re-write 990549871.89058 in the form p/q where p and q are both positive integers. To start with, 990549871.89058 can be written as simply 990549871.89058/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 990549871.89058, which in this case is 5. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 990549871.89058/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 990549871.89058/1 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 990549871.89058 as a fraction:
990549871/1 / 1