Step 1:
The first step to converting 646076409.54615 to a fraction is to re-write 646076409.54615 in the form p/q where p and q are both positive integers. To start with, 646076409.54615 can be written as simply 646076409.54615/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 646076409.54615, which in this case is 5. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 646076409.54615/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 646076409.54615/1 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 646076409.54615 as a fraction:
646076409/1 / 1