Step 1:
The first step to converting 601.66540112446 to a fraction is to re-write 601.66540112446 in the form p/q where p and q are both positive integers. To start with, 601.66540112446 can be written as simply 601.66540112446/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 601.66540112446, which in this case is 11. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 601.66540112446/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 601.66540112446/1 each by 100000000000:
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 601.66540112446 as a fraction:
158238/263 / 1