Alright, let's work through 71315224 times 51116542 step by step
71315224 × 51116542 = 51116542 × (71315224)
+ 51116542 × 4 that equals 204466168
+ 51116542 × 20 what gives us 1022330840
+ 51116542 × 200 yielding 10223308400
+ 51116542 × 5000 producing 255582710000
+ 51116542 × 10000 giving us 511165420000
+ 51116542 × 300000 what gives us 15334962600000
+ 51116542 × 1000000 what gives us 51116542000000
+ 51116542 × 70000000 which equals 3578157940000000

= 3645387642835408
