Find the next number in the series $1,6,23,76,\dots$.

Let's find the pattern between successive terms:
* $1\times 3+3=6$
* $6\times 3+5=23$
* $23\times 3+7=76$
Following this logic, the next operation should multiply by 3 and add the next odd number, which is 9:
* $76\times 3+9=228+9=237$
Thus, the next number is $237$.