Alright, let's work through 76766820 times 61730405 step by step
76766820 × 61730405 = 61730405 × (76766820)
+ 61730405 × 0 that is equal 0
+ 61730405 × 20 that equals 1234608100
+ 61730405 × 800 that is equal 49384324000
+ 61730405 × 6000 producing 370382430000
+ 61730405 × 60000 producing 3703824300000
+ 61730405 × 700000 giving us 43211283500000
+ 61730405 × 6000000 producing 370382430000000
+ 61730405 × 70000000 producing 4321128350000000

= 4738846889162100
