No problem, we've got 3810 and 4230 to multiply
3810 × 4230 = 4230 × (3810)
+ 4230 × 0 that results in 0
+ 4230 × 10 what gives us 42300
+ 4230 × 800 that is equal 3384000
+ 4230 × 3000 that equals 12690000

= 16116300
