Step 1:
The first step to converting 870690547.53451 to a fraction is to re-write 870690547.53451 in the form p/q where p and q are both positive integers. To start with, 870690547.53451 can be written as simply 870690547.53451/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 870690547.53451, which in this case is 5. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 870690547.53451/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 870690547.53451/1 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 870690547.53451 as a fraction:
870690547/1 / 1