Hard number to support free trade? Every dollar of our exports is such a number.
Since the net of exports positive versus imports negative your number is a negative number. When discussing trade policy if one looks at only the costs not the benefits of any proposed policy one does not gather enough information. If one looks only at the costs not the benefits then one will justify no action no matter how beneficial. If one looks at only the benefits then every action no matter the cost is one we should take.
Now by your calculation we should impose massive tariffs more than i propose becaue the number is such a negaticve net value.
Please let me know if you wish to actually engae is economic debate I do really prefer it to misleading one line answers.
If your position is so good why do you have to engage in obvious deception to try and support it?