Hi guys, I need to make a number 50 cake that makes about 70 servings. Do you think carving out of 12" x 18" (each number) would make about 70 servings? Or does anyone has any ideas??

I wold use two 9" or 10" round cakes (each 4" high) and make an additional smaller square or rectangular cake (also 4" high). Depending on how big you wanna cut the pieces it'll serve 70 ppl since the middle is sort of replaced by the rectangular pieces if that makes sence...