Alright, let's work through 5903 times 2230 step by step
5903 × 2230 = 2230 × (5903)
+ 2230 × 3 yielding 6690
+ 2230 × 00 that equals 0
+ 2230 × 900 yielding 2007000
+ 2230 × 5000 giving us 11150000

= 13163690
