Median: The number in the middle after placing the numbers in order.
The median would be 470.
How to solve for:
What you would do is line the numbers up from least to greatest. Your numbers should be lined up as 234, 355, 470, 476, 765. You would take two fingers and put one on each number at the end. Then you would take those same fingers and move it up a number at the same time. When doing this you would have only one number that is not covered up, which would be the number in the middle. Take note that this does not work for all equations because sometimes you would have two numbers left in the middle and you'll halve to solve for the median.
HOPE THIS HELPS! ^_^
