An oil extraction factory uses 1800kg of peanut kernels to extract 630kg of peanut oil. What is the oil yield of these peanuts?
某榨油厂用1800kg花生仁榨出花生油630kg．这些花生的出油率是多少？
<gadget id="calculator">630 / 1_800</gadget>
<output>7/20 = around 0.35</output>

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

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

<result>7/20 = around 0.35</result>