There are 7 white swans and 8 times as many black swans as there are white swans. How many black swans are there?
白天鹅有7只，黑天鹅是白天鹅的8倍，黑天鹅有多少只．
<gadget id="calculator">7 * 8</gadget>
<output>56</output>

<result>56</result>