Okay kiddo, let me explain what a gross ton mile is.
Imagine you and your friend went to the store to buy some toys. You both bought a toy car and a toy train, and each toy weighs 1 pound. So in total, you bought 4 toys, and they weigh 4 pounds altogether.
Now, let's say you need to transport these toys to your friend's house which is 1 mile away. This is where a gross ton mile comes in. It's a way of measuring how much weight you're carrying and how far you're carrying it.
In this example, you have 4 pounds of toys and you're traveling 1 mile. This means you have 4 gross ton miles. If you had 8 pounds of toys and traveled the same distance, you would have 8 gross ton miles.
Basically, a gross ton mile is a unit of measurement used in shipping and transportation to determine how much weight is being transported and how far it's being transported. It helps people figure out the cost of shipping, how much fuel is needed, and how long it will take to transport the goods.