Alright, let's work through 7664 times 2144 step by step
7664 × 2144 = 2144 × (7664)
+ 2144 × 4 what gives us 8576
+ 2144 × 60 yielding 128640
+ 2144 × 600 yielding 1286400
+ 2144 × 7000 resulting in 15008000

= 16431616
