The school distributes 300 saplings to students in Classes Six 1, Six 2, Six 3, and Six 4 according to 2:3:3:2 to plant trees, so how many fewer trees are planted in Six 1 than in Six 3.
学校把300棵树苗按2：3：3：2分配给六1、六2、六3、六4班的同学植树，这样六1比六3植树少多少棵．
<gadget id="calculator">2 + 3 + 3 + 2</gadget>
<output>10</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">2 / 10</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(3/10) - (1/5)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">300 * (1/10)</gadget>
<output>30</output>

<result>30</result>