Alright, let's work through 3934 times 9956 step by step
3934 × 9956 = 9956 × (3934)
+ 9956 × 4 that equals 39824
+ 9956 × 30 giving us 298680
+ 9956 × 900 resulting in 8960400
+ 9956 × 3000 resulting in 29868000

= 39166904
