Alright, let's work through 71665370 times 52586926 step by step
71665370 × 52586926 = 52586926 × (71665370)
+ 52586926 × 0 that equals 0
+ 52586926 × 70 that equals 3681084820
+ 52586926 × 300 that equals 15776077800
+ 52586926 × 5000 what gives us 262934630000
+ 52586926 × 60000 yielding 3155215560000
+ 52586926 × 600000 yielding 31552155600000
+ 52586926 × 1000000 what gives us 52586926000000
+ 52586926 × 70000000 which equals 3681084820000000

= 3768661508952620
