Step 1:
The first step to converting 515979723.1408 to a fraction is to re-write 515979723.1408 in the form p/q where p and q are both positive integers. To start with, 515979723.1408 can be written as simply 515979723.1408/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 515979723.1408, which in this case is 4. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 515979723.1408/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 515979723.1408/1 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 515979723.1408 as a fraction:
515979723/1 / 1