Alright, let's work through 9988 times 5758 step by step
9988 × 5758 = 5758 × (9988)
+ 5758 × 8 that equals 46064
+ 5758 × 80 that equals 460640
+ 5758 × 900 which equals 5182200
+ 5758 × 9000 giving us 51822000

= 57510904
