There are red and yellow balls in a box, and there are 48 more red balls than yellow balls. Take out 9 yellow balls and 12 red balls from the box each time. After taking several times, the red balls and yellow balls are taken out at the same time. How many red balls are in the box?
盒子里有红、黄两种颜色的小球，其中红球比黄球多48个．每次从盒子里取出9个黄球，12个红球，取了若干次后，红球和黄球同时取完．盒子里原有红球多少个？
<gadget id="calculator">12 - 9</gadget>
<output>3</output>

<gadget id="calculator">48 / 3</gadget>
<output>16</output>

<gadget id="calculator">16 * 12</gadget>
<output>192</output>

<result>192</result>