Alright, let's work through 99457800 times 42816678 step by step
99457800 × 42816678 = 42816678 × (99457800)
+ 42816678 × 0 resulting in 0
+ 42816678 × 00 that results in 0
+ 42816678 × 800 that equals 34253342400
+ 42816678 × 7000 producing 299716746000
+ 42816678 × 50000 giving us 2140833900000
+ 42816678 × 400000 that equals 17126671200000
+ 42816678 × 9000000 what gives us 385350102000000
+ 42816678 × 90000000 that is equal 3853501020000000

= 4258452597188400
