Alright, let's work through 3450 times 3528 step by step
3450 × 3528 = 3528 × (3450)
+ 3528 × 0 that equals 0
+ 3528 × 50 that is equal 176400
+ 3528 × 400 what gives us 1411200
+ 3528 × 3000 that is equal 10584000

= 12171600
