小明家养了5头奶牛，平均每头奶牛每天产奶8千克。这些奶牛五月份共产奶多少千克？(t(n4W:x4N4M3L(J8f,\(q(Z'a/g
算式：提示9y9N8d)?5S)^2z7Z(t(n4W:x4N4M3L(J8f,\(q(Z'a/g
答：这些奶牛五月份共产奶5q(B7^'Q+s;D7V;~;P(p1x/z9r1F4a千克。(t(n4W:x4N4M3L(J8f,\(q(Z'a/g