The students made 90 flowers, and every 5 flowers were tied into a bunch. 9 bunches have been tied, how many more can you tie?
同学们做了90朵花，每5朵扎成一束，已经扎了9束，还能再扎多少束？
<gadget id="calculator">90 / 5</gadget>
<output>18</output>

<gadget id="calculator">18 - 9</gadget>
<output>9</output>

<result>9</result>