No problem, we've got 2180 and 5905 to multiply
2180 × 5905 = 5905 × (2180)
+ 5905 × 0 what gives us 0
+ 5905 × 80 giving us 472400
+ 5905 × 100 resulting in 590500
+ 5905 × 2000 that equals 11810000

= 12872900
