Step 1:
The first step to converting 578158780.7611 to a fraction is to re-write 578158780.7611 in the form p/q where p and q are both positive integers. To start with, 578158780.7611 can be written as simply 578158780.7611/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 578158780.7611, which in this case is 4. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 578158780.7611/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 578158780.7611/1 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 578158780.7611 as a fraction:
578158780/1 / 1