Step 1:
The first step to converting 661638 to a fraction is to re-write 661638 in the form p/q where p and q are both positive integers. To start with, 661638 can be written as simply 661638/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 661638, which in this case is 0. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 661638/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 661638/1 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 661638 as a fraction:
661638/1 / 1