Alright, let's work through 7221 times 9645 step by step
7221 × 9645 = 9645 × (7221)
+ 9645 × 1 which equals 9645
+ 9645 × 20 that is equal 192900
+ 9645 × 200 giving us 1929000
+ 9645 × 7000 that results in 67515000

= 69646545
