Alright, let's work through 1035 times 5103 step by step
1035 × 5103 = 5103 × (1035)
+ 5103 × 5 what gives us 25515
+ 5103 × 30 resulting in 153090
+ 5103 × 000 giving us 0
+ 5103 × 1000 resulting in 5103000

= 5281605
