The ratio of poplars to willows in the school is 5:3. There are 30 more poplars than willows. How many poplars are there?
学校内杨树和柳树的比是5：3，杨树比柳树多30棵，求杨树多少棵？
<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">30 / 2</gadget>
<output>15</output>

<gadget id="calculator">15 * 5</gadget>
<output>75</output>

<result>75</result>