Alright, let's work through 80422135 times 2534731 step by step
80422135 × 2534731 = 2534731 × (80422135)
+ 2534731 × 5 that equals 12673655
+ 2534731 × 30 what gives us 76041930
+ 2534731 × 100 that is equal 253473100
+ 2534731 × 2000 which equals 5069462000
+ 2534731 × 20000 which equals 50694620000
+ 2534731 × 400000 yielding 1013892400000
+ 2534731 × 0000000 that equals 0
+ 2534731 × 80000000 which equals 202778480000000

= 203848478670685
