Alright, let's work through 3950 times 2700 step by step
3950 × 2700 = 2700 × (3950)
+ 2700 × 0 that equals 0
+ 2700 × 50 which equals 135000
+ 2700 × 900 what gives us 2430000
+ 2700 × 3000 what gives us 8100000

= 10665000
