Alright, let's work through 4142 times 730 step by step
4142 × 730 = 730 × (4142)
+ 730 × 2 that is equal 1460
+ 730 × 40 resulting in 29200
+ 730 × 100 yielding 73000
+ 730 × 4000 what gives us 2920000

= 3023660
