Alright, let's work through 58478557 times 7909809 step by step
58478557 × 7909809 = 7909809 × (58478557)
+ 7909809 × 7 that results in 55368663
+ 7909809 × 50 what gives us 395490450
+ 7909809 × 500 that is equal 3954904500
+ 7909809 × 8000 that results in 63278472000
+ 7909809 × 70000 producing 553686630000
+ 7909809 × 400000 what gives us 3163923600000
+ 7909809 × 8000000 that results in 63278472000000
+ 7909809 × 50000000 that equals 395490450000000

= 462554216465613
