Uncle Chen raises 450 sheep, of which (3/5) are goats. Later, he bought 30 goats. What percentage of goats are now?
陈伯伯养羊450只，其中(3/5)是山羊，后来有买来30只山羊，现在山羊占百分之几？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">450 * (3/5)</gadget>
<output>270</output>

<gadget id="calculator">270 + 30</gadget>
<output>300</output>

<gadget id="calculator">450 + 30</gadget>
<output>480</output>

<gadget id="calculator">300 / 480</gadget>
<output>5/8 = around 0.625</output>

<result>5/8 = around 0.625</result>