Alright, let's work through 1613 times 7603 step by step
1613 × 7603 = 7603 × (1613)
+ 7603 × 3 giving us 22809
+ 7603 × 10 which equals 76030
+ 7603 × 600 resulting in 4561800
+ 7603 × 1000 resulting in 7603000

= 12263639
