Alright, let's work through 79900498 times 67321799 step by step
79900498 × 67321799 = 67321799 × (79900498)
+ 67321799 × 8 that is equal 538574392
+ 67321799 × 90 giving us 6058961910
+ 67321799 × 400 that results in 26928719600
+ 67321799 × 0000 that is equal 0
+ 67321799 × 00000 producing 0
+ 67321799 × 900000 what gives us 60589619100000
+ 67321799 × 9000000 that equals 605896191000000
+ 67321799 × 70000000 that equals 4712525930000000

= 5379045266355902
