Alright, let's work through 49121094 times 80715253 step by step
49121094 × 80715253 = 80715253 × (49121094)
+ 80715253 × 4 that is equal 322861012
+ 80715253 × 90 producing 7264372770
+ 80715253 × 000 resulting in 0
+ 80715253 × 1000 that results in 80715253000
+ 80715253 × 20000 producing 1614305060000
+ 80715253 × 100000 producing 8071525300000
+ 80715253 × 9000000 giving us 726437277000000
+ 80715253 × 40000000 producing 3228610120000000

= 3964821529846782
