Alright, let's work through 77427724 times 1712840 step by step
77427724 × 1712840 = 1712840 × (77427724)
+ 1712840 × 4 which equals 6851360
+ 1712840 × 20 that equals 34256800
+ 1712840 × 700 what gives us 1198988000
+ 1712840 × 7000 that is equal 11989880000
+ 1712840 × 20000 giving us 34256800000
+ 1712840 × 400000 that is equal 685136000000
+ 1712840 × 7000000 producing 11989880000000
+ 1712840 × 70000000 resulting in 119898800000000

= 132621302776160
