Alright, let's work through 80322874 times 80042796 step by step
80322874 × 80042796 = 80042796 × (80322874)
+ 80042796 × 4 what gives us 320171184
+ 80042796 × 70 resulting in 5602995720
+ 80042796 × 800 resulting in 64034236800
+ 80042796 × 2000 what gives us 160085592000
+ 80042796 × 20000 that is equal 1600855920000
+ 80042796 × 300000 that is equal 24012838800000
+ 80042796 × 0000000 that results in 0
+ 80042796 × 80000000 that is equal 6403423680000000

= 6429267417715704
