Alright, let's work through 3486 times 4815 step by step
3486 × 4815 = 4815 × (3486)
+ 4815 × 6 what gives us 28890
+ 4815 × 80 resulting in 385200
+ 4815 × 400 that results in 1926000
+ 4815 × 3000 that equals 14445000

= 16785090
