Alright, let's work through 71703307 times 70843418 step by step
71703307 × 70843418 = 70843418 × (71703307)
+ 70843418 × 7 which equals 495903926
+ 70843418 × 00 what gives us 0
+ 70843418 × 300 producing 21253025400
+ 70843418 × 3000 that results in 212530254000
+ 70843418 × 00000 what gives us 0
+ 70843418 × 700000 that results in 49590392600000
+ 70843418 × 1000000 producing 70843418000000
+ 70843418 × 70000000 that results in 4959039260000000

= 5079707349783326
