Alright, let's work through 9945 times 7936 step by step
9945 × 7936 = 7936 × (9945)
+ 7936 × 5 giving us 39680
+ 7936 × 40 resulting in 317440
+ 7936 × 900 yielding 7142400
+ 7936 × 9000 that results in 71424000

= 78923520
