Alright, let's work through 77491977 times 75214717 step by step
77491977 × 75214717 = 75214717 × (77491977)
+ 75214717 × 7 resulting in 526503019
+ 75214717 × 70 what gives us 5265030190
+ 75214717 × 900 that is equal 67693245300
+ 75214717 × 1000 that results in 75214717000
+ 75214717 × 90000 producing 6769324530000
+ 75214717 × 400000 what gives us 30085886800000
+ 75214717 × 7000000 that is equal 526503019000000
+ 75214717 × 70000000 giving us 5265030190000000

= 5828537119825509
