How do you spell your name?

This morning on our way to school, we asked Matthew if he knew how to spell his name. His reply was yes and he went, "1-7-7-0". Then we probed him a little more. He continued, "3"... "10 (Ten)". Mike and I looked at each other and said "buy 4D - 1770, 0310!" well, no hit today. Should we buy 4D this weekend? hmmmm...