No problem, we've got 2603 and 6455 to multiply
2603 × 6455 = 6455 × (2603)
+ 6455 × 3 that is equal 19365
+ 6455 × 00 what gives us 0
+ 6455 × 600 that equals 3873000
+ 6455 × 2000 resulting in 12910000

= 16802365
