We're going to solve 77980479 multiplied by 64052687
77980479 × 64052687 = 64052687 × (77980479)
+ 64052687 × 9 what gives us 576474183
+ 64052687 × 70 producing 4483688090
+ 64052687 × 400 that is equal 25621074800
+ 64052687 × 0000 that equals 0
+ 64052687 × 80000 giving us 5124214960000
+ 64052687 × 900000 that equals 57647418300000
+ 64052687 × 7000000 yielding 448368809000000
+ 64052687 × 70000000 which equals 4483688090000000

= 4994859213497073
