No problem, we've got 5545 and 3903 to multiply
5545 × 3903 = 3903 × (5545)
+ 3903 × 5 that equals 19515
+ 3903 × 40 what gives us 156120
+ 3903 × 500 yielding 1951500
+ 3903 × 5000 that is equal 19515000

= 21642135
