<span>In the laws of mathematics, especially in rounding off digits, you
should take note of the digit following that number no matter how long or short
a number is. If the number is preceded by numbers between 0-4, the number does
not change. However if its is preceded by numbers between 5-9, add one to the
number. In this problem, you are required to round off each number to the
nearest ten million before adding them. So 0.9998 is equal to 1 </span>
