Alright, let's work through 1602603 times 2789860 step by step
1602603 × 2789860 = 2789860 × (1602603)
+ 2789860 × 3 that results in 8369580
+ 2789860 × 00 that equals 0
+ 2789860 × 600 yielding 1673916000
+ 2789860 × 2000 that equals 5579720000
+ 2789860 × 00000 producing 0
+ 2789860 × 600000 resulting in 1673916000000
+ 2789860 × 1000000 that is equal 2789860000000

= 4471038005580
