Alright, let's work through 3090 times 3866 step by step
3090 × 3866 = 3866 × (3090)
+ 3866 × 0 that results in 0
+ 3866 × 90 what gives us 347940
+ 3866 × 000 resulting in 0
+ 3866 × 3000 giving us 11598000

= 11945940
