The whole class of 46 people went boating, rented 9 boats in total, each big boat took 6 people, and each small boat took 4 people, how many big boats did they rent?
全班46人去划船，一共租了9条船，每条大船坐6人，每条小船坐4人，他们租用了多少条大船．
<gadget id="calculator">9 * 6</gadget>
<output>54</output>

<gadget id="calculator">54 - 46</gadget>
<output>8</output>

<gadget id="calculator">6 - 4</gadget>
<output>2</output>

<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">9 - 4</gadget>
<output>5</output>

<result>5</result>