Alright, let's work through 7902 times 1544 step by step
7902 × 1544 = 1544 × (7902)
+ 1544 × 2 resulting in 3088
+ 1544 × 00 giving us 0
+ 1544 × 900 what gives us 1389600
+ 1544 × 7000 producing 10808000

= 12200688
