Alright, let's work through 80477791 times 67827720 step by step
80477791 × 67827720 = 67827720 × (80477791)
+ 67827720 × 1 that equals 67827720
+ 67827720 × 90 which equals 6104494800
+ 67827720 × 700 what gives us 47479404000
+ 67827720 × 7000 that is equal 474794040000
+ 67827720 × 70000 giving us 4747940400000
+ 67827720 × 400000 that is equal 27131088000000
+ 67827720 × 0000000 which equals 0
+ 67827720 × 80000000 that equals 5426217600000000

= 5458625074166520
