Alright, let's work through 79150985 times 89701379 step by step
79150985 × 89701379 = 89701379 × (79150985)
+ 89701379 × 5 giving us 448506895
+ 89701379 × 80 giving us 7176110320
+ 89701379 × 900 that results in 80731241100
+ 89701379 × 0000 resulting in 0
+ 89701379 × 50000 what gives us 4485068950000
+ 89701379 × 100000 that results in 8970137900000
+ 89701379 × 9000000 that equals 807312411000000
+ 89701379 × 70000000 producing 6279096530000000

= 7099952503708315
