在自然数1~500中，数字0有多少个?(g(b+y6q)X+K:e*w6e(H
算式：提示/r+z8}9t6S7V.]0j3q7S4k+Y*C4Y.U+`(W/}(@2F(g(b+y6q)X+K:e*w6e(H
答：在自然数1~500中，数字0有)A7R0m+}8z;g7X0h个。(g(b+y6q)X+K:e*w6e(H