The fruit store originally had 1,500 kilograms of fruit, of which apples accounted for 25% of the total. Later, some apples were purchased. At this time, apples accounted for 40% of the total fruit. How many kilograms of apples were purchased later?
水果商店原来有水果1500千克，其中苹果占总数的25%后来又购进一些苹果，这时苹果占水果总数的40%，后来又购进多少千克苹果？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(3/4) / (3/5)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">1_500 * (5/4)</gadget>
<output>1_875</output>

<gadget id="calculator">1_875 - 1_500</gadget>
<output>375</output>

<result>375</result>