No problem, we've got 4080 and 1731 to multiply
4080 × 1731 = 1731 × (4080)
+ 1731 × 0 that results in 0
+ 1731 × 80 what gives us 138480
+ 1731 × 000 resulting in 0
+ 1731 × 4000 yielding 6924000

= 7062480
