Step 1:
The first step to converting 213870.8659716 to a fraction is to re-write 213870.8659716 in the form p/q where p and q are both positive integers. To start with, 213870.8659716 can be written as simply 213870.8659716/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 213870.8659716, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 213870.8659716/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 213870.8659716/1 each by 10000000:
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 213870.8659716 as a fraction:
213871/1 / 1