Step 1:
The first step to converting 422590 to a fraction is to re-write 422590 in the form p/q where p and q are both positive integers. To start with, 422590 can be written as simply 422590/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 422590, which in this case is 0. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 422590/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 422590/1 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 422590 as a fraction:
422590/1 / 1