Alright, let's work through 81511140 times 74882316 step by step
81511140 × 74882316 = 74882316 × (81511140)
+ 74882316 × 0 resulting in 0
+ 74882316 × 40 giving us 2995292640
+ 74882316 × 100 yielding 7488231600
+ 74882316 × 1000 what gives us 74882316000
+ 74882316 × 10000 producing 748823160000
+ 74882316 × 500000 yielding 37441158000000
+ 74882316 × 1000000 that equals 74882316000000
+ 74882316 × 80000000 that results in 5990585280000000

= 6103742943000240
