Alright, let's work through 2105 times 3536 step by step
2105 × 3536 = 3536 × (2105)
+ 3536 × 5 what gives us 17680
+ 3536 × 00 what gives us 0
+ 3536 × 100 that is equal 353600
+ 3536 × 2000 giving us 7072000

= 7443280
