Alright, let's work through 6121 times 4098 step by step
6121 × 4098 = 4098 × (6121)
+ 4098 × 1 yielding 4098
+ 4098 × 20 which equals 81960
+ 4098 × 100 resulting in 409800
+ 4098 × 6000 that equals 24588000

= 25083858
