Alright, let's work through 55081577 times 13691659 step by step
55081577 × 13691659 = 13691659 × (55081577)
+ 13691659 × 7 which equals 95841613
+ 13691659 × 70 that is equal 958416130
+ 13691659 × 500 that results in 6845829500
+ 13691659 × 1000 yielding 13691659000
+ 13691659 × 80000 that is equal 1095332720000
+ 13691659 × 000000 which equals 0
+ 13691659 × 5000000 that equals 68458295000000
+ 13691659 × 50000000 which equals 684582950000000

= 754158169466243
