Step 1:
The first step to converting 18643500.20355 to a fraction is to re-write 18643500.20355 in the form p/q where p and q are both positive integers. To start with, 18643500.20355 can be written as simply 18643500.20355/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 18643500.20355, which in this case is 5. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 18643500.20355/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 18643500.20355/1 each by 100000:
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 18643500.20355 as a fraction:
18643500/1 / 1