The money on Xiaoxin’s body can buy 16 bottles of mineral water or 8 bottles of green tea. He first bought 4 bottles of mineral water and a bottle of green tea. How many bottles of green tea can he buy with the remaining money?
小新身上的钱可以买16瓶矿泉水或8瓶绿茶，他先买了4瓶矿泉水和一瓶绿茶，剩下的钱可以买几瓶绿茶？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">4 * (1/2)</gadget>
<output>2</output>

<gadget id="calculator">2 + 1</gadget>
<output>3</output>

<gadget id="calculator">8 - 3</gadget>
<output>5</output>

<result>5</result>