He is trapped! Seal the box, ship it into the mines!
Hmm... looking at this chapter, when was the last time I used any complicated math and could I even do it.
One time my uncle ask to calculate the dimension of a wall in his house.
His wall is not a rectangle, but I did my best to get every corner, number. I took like 3 hours to divide the wall into multiple parts "rectangle and triangle" to calculate it.
Gave him the result and he said "this is pretty good, but you don't need to be this accuracy".