Alright, let's work through 7281 times 1645 step by step
7281 × 1645 = 1645 × (7281)
+ 1645 × 1 that equals 1645
+ 1645 × 80 which equals 131600
+ 1645 × 200 giving us 329000
+ 1645 × 7000 resulting in 11515000

= 11977245
