Alright, let's work through 9918 times 5121 step by step
9918 × 5121 = 5121 × (9918)
+ 5121 × 8 that is equal 40968
+ 5121 × 10 giving us 51210
+ 5121 × 900 that equals 4608900
+ 5121 × 9000 resulting in 46089000

= 50790078
