A store has children's toys divided into large, medium and small. The large size is 10 yuan, the medium size is 6 yuan, and the small size is 2 yuan. Teacher Li bought 64 pieces for 360 yuan. Among them, the money spent on the medium size is the same as that of the small size, so how many small pieces do you buy for the large size?
某商店有分大、中、小的儿童玩具，大号10元，中号6元，小号2元，李老师用360元买了64件．其中中号花的钱与小号的钱一样多，那么大号玩具买了多小件？
<gadget id="calculator">64 * 10</gadget>
<output>640</output>

<gadget id="calculator">640 - 360</gadget>
<output>280</output>

<gadget id="calculator">3 * 10</gadget>
<output>30</output>

<gadget id="calculator">30 - 6 - 6</gadget>
<output>18</output>

<gadget id="calculator">10 + 18</gadget>
<output>28</output>

<gadget id="calculator">280 / 28</gadget>
<output>10</output>

<gadget id="calculator">64 - 10 - 30</gadget>
<output>24</output>

<result>24</result>