We're going to solve 4428 multiplied by 3646
4428 × 3646 = 3646 × (4428)
+ 3646 × 8 that is equal 29168
+ 3646 × 20 what gives us 72920
+ 3646 × 400 that equals 1458400
+ 3646 × 4000 yielding 14584000

= 16144488
