163894

I tried adding 3 consecutive numbers and here’s what I got:
0+1+2=3
1+2+3=6
2+3+4=9
3+4+5=12
4+5+6=15
5+6+7=18
6+7+8=21
7+8+9=24
8+9+10=27
9+10+11=30
The thing I found in common that the answers have is that all the answers are multiples of three. So I started with 0+1+2, which gave me three, then, I added one to each number, and the answer kept on getting higher by 3, which made me find out that the thing the answers have in common is that they’re all multiples of 3.