Alright, let's work through 1642 times 2715 step by step
1642 × 2715 = 2715 × (1642)
+ 2715 × 2 that is equal 5430
+ 2715 × 40 what gives us 108600
+ 2715 × 600 resulting in 1629000
+ 2715 × 1000 that is equal 2715000

= 4458030
