Step 1:
The first step to converting 1553710.9890859 to a fraction is to re-write 1553710.9890859 in the form p/q where p and q are both positive integers. To start with, 1553710.9890859 can be written as simply 1553710.9890859/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 1553710.9890859, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 1553710.9890859/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 1553710.9890859/1 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 1553710.9890859 as a fraction:
1553710/1 / 1