Alright, let's work through 75015215 times 685218 step by step
75015215 × 685218 = 685218 × (75015215)
+ 685218 × 5 which equals 3426090
+ 685218 × 10 giving us 6852180
+ 685218 × 200 which equals 137043600
+ 685218 × 5000 producing 3426090000
+ 685218 × 10000 which equals 6852180000
+ 685218 × 000000 yielding 0
+ 685218 × 5000000 that results in 3426090000000
+ 685218 × 70000000 that equals 47965260000000

= 51401775591870
