Supermarket promotion, buy 3 bottles of 5 liters of refined oil, get 2 small bottles of 500 ml refined oil, the school cafeteria bought 30 bottles of 5 liters of refined oil, how many liters of refined oil can you bring back in total?
超市促销，买3瓶5升的精制油送2小瓶500毫升精制油，学校食堂买了30瓶5升的精制油，一共可以带回多少升精制油？
<gadget id="calculator">5 * 30</gadget>
<output>150</output>

<gadget id="calculator">30 / 3</gadget>
<output>10</output>

<gadget id="calculator">500 / 1_000</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">10 * 2 * (1/2)</gadget>
<output>10</output>

<gadget id="calculator">150 + 10</gadget>
<output>160</output>

<result>160</result>