Alright, let's work through 1578 times 3680 step by step
1578 × 3680 = 3680 × (1578)
+ 3680 × 8 that is equal 29440
+ 3680 × 70 which equals 257600
+ 3680 × 500 what gives us 1840000
+ 3680 × 1000 that results in 3680000

= 5807040
