Step 1:
The first step to converting 781821628.25435 to a fraction is to re-write 781821628.25435 in the form p/q where p and q are both positive integers. To start with, 781821628.25435 can be written as simply 781821628.25435/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 781821628.25435, which in this case is 5. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 781821628.25435/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 781821628.25435/1 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 781821628.25435 as a fraction:
781821628/1 / 1