No problem, we've got 2400 and 5311 to multiply
2400 × 5311 = 5311 × (2400)
+ 5311 × 0 what gives us 0
+ 5311 × 00 yielding 0
+ 5311 × 400 that is equal 2124400
+ 5311 × 2000 producing 10622000

= 12746400
