6 oil presses squeeze 49.2 tons of oil per day. According to this calculation, how many tons of oil can be squeezed per day by adding 4 such oil presses?
6台榨油机每天榨油49.2吨，照这样计算，增加4台这样的榨油机，每天可榨油多少吨？
<gadget id="calculator">49.2 / 6</gadget>
<output>8.2</output>

<gadget id="calculator">4 + 6</gadget>
<output>10</output>

<gadget id="calculator">8.2 * 10</gadget>
<output>82</output>

<result>82</result>