Alright, let's work through 1915 times 1539 step by step
1915 × 1539 = 1539 × (1915)
+ 1539 × 5 that is equal 7695
+ 1539 × 10 that equals 15390
+ 1539 × 900 yielding 1385100
+ 1539 × 1000 that equals 1539000

= 2947185
