Alright, let's work through 3502 times 1580 step by step
3502 × 1580 = 1580 × (3502)
+ 1580 × 2 which equals 3160
+ 1580 × 00 which equals 0
+ 1580 × 500 what gives us 790000
+ 1580 × 3000 which equals 4740000

= 5533160
