Alright, let's work through 3525 times 7978 step by step
3525 × 7978 = 7978 × (3525)
+ 7978 × 5 that is equal 39890
+ 7978 × 20 that results in 159560
+ 7978 × 500 that is equal 3989000
+ 7978 × 3000 that results in 23934000

= 28122450
