Answer is 2,440,000,000
Step by step
See attachment too
2,443,802,280
The “4” next to the “3” is the ten million place and is the key number that needs to round up or stay the same, depending on what we do with the 3.
The rule for rounding is if a number is 5 or bigger, the number next to it goes up. If the number is 4 or smaller, the number does not round up.