Alright, let's work through 42099885 times 89183444 step by step
42099885 × 89183444 = 89183444 × (42099885)
+ 89183444 × 5 that is equal 445917220
+ 89183444 × 80 that equals 7134675520
+ 89183444 × 800 producing 71346755200
+ 89183444 × 9000 resulting in 802650996000
+ 89183444 × 90000 that results in 8026509960000
+ 89183444 × 000000 which equals 0
+ 89183444 × 2000000 which equals 178366888000000
+ 89183444 × 40000000 producing 3567337760000000

= 3754612736303940
