Alright, let's work through 3590 times 7239 step by step
3590 × 7239 = 7239 × (3590)
+ 7239 × 0 that equals 0
+ 7239 × 90 resulting in 651510
+ 7239 × 500 yielding 3619500
+ 7239 × 3000 resulting in 21717000

= 25988010
