Alright, let's work through 9980 times 5003 step by step
9980 × 5003 = 5003 × (9980)
+ 5003 × 0 yielding 0
+ 5003 × 80 that equals 400240
+ 5003 × 900 that is equal 4502700
+ 5003 × 9000 giving us 45027000

= 49929940
