Step 1:
The first step to converting 861405.64562536 to a fraction is to re-write 861405.64562536 in the form p/q where p and q are both positive integers. To start with, 861405.64562536 can be written as simply 861405.64562536/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 861405.64562536, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 861405.64562536/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 861405.64562536/1 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 861405.64562536 as a fraction:
861405/1 / 1