The relocation project of our school requires a total investment of 8 million yuan, with an investment of 2.5 million yuan in the first phase and an estimated investment of 4 million yuan in the second phase. How much more will the second phase invest than the first phase?
我校进行搬迁工程，总投资需要800万元，第一期投资250万元，第二期预计投资400万元．第二期比第一期多投资百分之几？
<gadget id="calculator">400 - 250</gadget>
<output>150</output>

<gadget id="calculator">150 / 250</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>