In a basketball game, Xiao Ming has already shot 12 balls and hit 5 of them. If he wants to make his hit rate reach 65%, how many balls should he hit at least?
某场篮球比赛，小明已经投了12个球，命中了其中的5个，要使其命中率达到65%以上，则他至少还要投中多少个球．
<gadget id="calculator">65 / 100</gadget>
<output>13/20 = around 0.65</output>

<gadget id="calculator">(13/20) * 12</gadget>
<output>39/5 = around 7.8</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">5 * 1</gadget>
<output>5</output>

<gadget id="calculator">(39/5) - 5</gadget>
<output>14/5 = around 2.8</output>

<gadget id="calculator">1 - (13/20)</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">(14/5) / (7/20)</gadget>
<output>8</output>

<result>8</result>