Alright, let's work through 71869144 times 21376085 step by step
71869144 × 21376085 = 21376085 × (71869144)
+ 21376085 × 4 what gives us 85504340
+ 21376085 × 40 what gives us 855043400
+ 21376085 × 100 that results in 2137608500
+ 21376085 × 9000 giving us 192384765000
+ 21376085 × 60000 yielding 1282565100000
+ 21376085 × 800000 which equals 17100868000000
+ 21376085 × 1000000 that is equal 21376085000000
+ 21376085 × 70000000 that results in 1496325950000000

= 1536280931021240
