6 oil presses extract 48.6 tons of oil per day, and now 13 more of the same oil presses are added. How many tons of oil are extracted in total per day? (Solution by proportional method)
6台榨油机每天榨油48.6吨，现在增加了13台同样的榨油机，每天共榨油多少吨？(用比例方法解)
<gadget id="calculator">48.6 / 6</gadget>
<output>8.1</output>

<gadget id="calculator">8.1 * 6</gadget>
<output>48.6</output>

<gadget id="calculator">8.1 * 13</gadget>
<output>105.3</output>

<gadget id="calculator">48.6 + 105.3</gadget>
<output>153.9</output>

<result>153.9</result>