Alright, let's work through 4921 times 8155 step by step
4921 × 8155 = 8155 × (4921)
+ 8155 × 1 that is equal 8155
+ 8155 × 20 resulting in 163100
+ 8155 × 900 that equals 7339500
+ 8155 × 4000 which equals 32620000

= 40130755
