Jeff makes a total of 10 * 12 = <<10*12=120>>120 donuts.
Jeff eats 1 * 12 = <<1*12=12>>12 donuts.
After Chris is done eating, there are 120 - 12 - 8 = <<120-12-8=100>>100 donuts remaining.
Jeff needs 100 / 10 = <<100/10=10>>10 boxes to store all of his donuts.
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