Alright, let's work through 75833891 times 71453628 step by step
75833891 × 71453628 = 71453628 × (75833891)
+ 71453628 × 1 that results in 71453628
+ 71453628 × 90 giving us 6430826520
+ 71453628 × 800 producing 57162902400
+ 71453628 × 3000 yielding 214360884000
+ 71453628 × 30000 producing 2143608840000
+ 71453628 × 800000 producing 57162902400000
+ 71453628 × 5000000 yielding 357268140000000
+ 71453628 × 70000000 what gives us 5001753960000000

= 5418606637306548
