Alright, let's work through 6604 times 2600 step by step
6604 × 2600 = 2600 × (6604)
+ 2600 × 4 that is equal 10400
+ 2600 × 00 that is equal 0
+ 2600 × 600 that equals 1560000
+ 2600 × 6000 that equals 15600000

= 17170400
