The product of the three digits of the integers 226 and 318 is 24 (Note: 2*2*6 and 3*1*8). Then, how many three-digit numbers have the product of each digit is 24.
整数226和318三个数位上数字的乘积都是24(注：2*2*6和3*1*8)．那么，有多少个三位数其各位数字的乘积为24．
<gadget id="calculator">3 * 2 * 3</gadget>
<output>18</output>

<gadget id="calculator">18 + 3</gadget>
<output>21</output>

<result>21</result>