Follow-up: Enter mathematical operators to find a valid equation

This exercise was originally posted at: http://maritimeorca0.blogspot.com/2016/03/enter-mathematical-operators-to-find.html

The Task

Change each question mark into a mathematical operator so that the total matches the value after the equal sign. The use of parentheses and more advanced operators such as exponents are acceptable.

3 ? 6 ? 8 ? 1 ? 1 ? 1 ? 1 ? 9 ? 4 ? 4 ? 9 ? 8 ? 6 ? 4 ? 8 ? 1 ? 9 ? 5 = 68

My Completed Work

3 x 6 + 8 + 1 + 1 + 1 + 1 - 9 + 4 + 4 - 9 + 8 - 6 + 4 - 8 + (1 + 9) x 5 = 68

Feel Free to Comment

Now that this exercise has concluded, feel free to share any thoughts that you had regarding results, your approach, and any other ideas that popped in your head regarding this exercise.

Upon completion of this exercise, please fill out the following form:
https://docs.google.com/forms/d/1R4AJxDyV7ed6YlbdS1p8EPyFA-3301b2GbeRPHafpRw/viewform?usp=send_form
Responses to the above form are collected and stored in a spreadsheet that can be viewed at:
https://docs.google.com/spreadsheets/d/1DvD-Roc4HNJp9SfF1QMVpu7jdU3nX_4CiR836mBNNt0/pubhtml