No problem, we've got 4026 and 3400 to multiply
4026 × 3400 = 3400 × (4026)
+ 3400 × 6 producing 20400
+ 3400 × 20 giving us 68000
+ 3400 × 000 producing 0
+ 3400 × 4000 what gives us 13600000

= 13688400
