Alright, let's work through 9951 times 5547 step by step
9951 × 5547 = 5547 × (9951)
+ 5547 × 1 which equals 5547
+ 5547 × 50 that is equal 277350
+ 5547 × 900 that is equal 4992300
+ 5547 × 9000 giving us 49923000

= 55198197
