Deng Deng goes to the store to buy stationery, and the money he brings is just enough to buy 8 gel pens with a unit price of 1.5 yuan. If he wants to buy a pen with a unit price of 2 yuan, how many can he buy? (Solving problems with proportions)
登登去商店买文具，他带的钱刚好可以买8支单价是1.5元的中性笔，如果他想买单价是2元的笔，可以买几支？(用比例解决问题)
<gadget id="calculator">1.5 * 8</gadget>
<output>12</output>

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<result>6</result>