Alright, let's work through 49870998 times 89901773 step by step
49870998 × 89901773 = 89901773 × (49870998)
+ 89901773 × 8 what gives us 719214184
+ 89901773 × 90 yielding 8091159570
+ 89901773 × 900 that equals 80911595700
+ 89901773 × 0000 resulting in 0
+ 89901773 × 70000 what gives us 6293124110000
+ 89901773 × 800000 resulting in 71921418400000
+ 89901773 × 9000000 which equals 809115957000000
+ 89901773 × 40000000 that results in 3596070920000000

= 4483491141479454
