The flower shop has 300 roses, 7 in a bunch, and 40 bunches are tied. The remaining 5 roses are in a bunch, how many more can you tie?
花店有300枝玫瑰，7枝一束，扎了40束．剩下的玫瑰5枝一束，还能扎几束？
<gadget id="calculator">7 * 40</gadget>
<output>280</output>

<gadget id="calculator">300 - 280</gadget>
<output>20</output>

<gadget id="calculator">20 / 5</gadget>
<output>4</output>

<result>4</result>