Alright, let's work through 27680499 times 88149457 step by step
27680499 × 88149457 = 88149457 × (27680499)
+ 88149457 × 9 that equals 793345113
+ 88149457 × 90 that equals 7933451130
+ 88149457 × 400 that results in 35259782800
+ 88149457 × 0000 that equals 0
+ 88149457 × 80000 yielding 7051956560000
+ 88149457 × 600000 yielding 52889674200000
+ 88149457 × 7000000 which equals 617046199000000
+ 88149457 × 20000000 that is equal 1762989140000000

= 2440020956339043
