Step 1:
The first step to converting 644680 to a fraction is to re-write 644680 in the form p/q where p and q are both positive integers. To start with, 644680 can be written as simply 644680/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 644680, which in this case is 0. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 644680/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 644680/1 each by 1:
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 644680 as a fraction:
644680/1 / 1