Alright, let's work through 71367381 times 80339752 step by step
71367381 × 80339752 = 80339752 × (71367381)
+ 80339752 × 1 giving us 80339752
+ 80339752 × 80 yielding 6427180160
+ 80339752 × 300 yielding 24101925600
+ 80339752 × 7000 resulting in 562378264000
+ 80339752 × 60000 yielding 4820385120000
+ 80339752 × 300000 what gives us 24101925600000
+ 80339752 × 1000000 resulting in 80339752000000
+ 80339752 × 70000000 yielding 5623782640000000

= 5733637690429512
