Alright, let's work through 81374470 times 82777293 step by step
81374470 × 82777293 = 82777293 × (81374470)
+ 82777293 × 0 that results in 0
+ 82777293 × 70 producing 5794410510
+ 82777293 × 400 resulting in 33110917200
+ 82777293 × 4000 producing 331109172000
+ 82777293 × 70000 what gives us 5794410510000
+ 82777293 × 300000 giving us 24833187900000
+ 82777293 × 1000000 resulting in 82777293000000
+ 82777293 × 80000000 that is equal 6622183440000000

= 6735958345909710
