Alright, let's work through 4608 times 2587 step by step
4608 × 2587 = 2587 × (4608)
+ 2587 × 8 that equals 20696
+ 2587 × 00 what gives us 0
+ 2587 × 600 that results in 1552200
+ 2587 × 4000 what gives us 10348000

= 11920896
