At Dora's Donut Shop, Dora makes 15 different varieties of donuts. Seven of these varieties are filled with jelly or cream. Officer Sweetooth was sent to Dora's shop to choose a dozen donuts, all different, with six filled and six unfilled. How many different assortments might he choose?
unfilled ... 8C6
filled ... 7C6
different assortments ... 8C6 * 7C6