Alright, let's work through 4918 times 3931 step by step
4918 × 3931 = 3931 × (4918)
+ 3931 × 8 which equals 31448
+ 3931 × 10 resulting in 39310
+ 3931 × 900 what gives us 3537900
+ 3931 × 4000 that results in 15724000

= 19332658
