Step 1:
The first step to converting 637856.4159942 to a fraction is to re-write 637856.4159942 in the form p/q where p and q are both positive integers. To start with, 637856.4159942 can be written as simply 637856.4159942/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 637856.4159942, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 637856.4159942/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 637856.4159942/1 each by 10000000:
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 637856.4159942 as a fraction:
637856/1 / 1