Aunt Zhang deposited 50,000 yuan in the bank for three years, with an annual interest rate of 2.75%. Due to urgent needs, she had to withdraw the deposit that had been deposited for two and a half years. At this time, the annual interest rate was calculated at 0.35%. How much less interest will be obtained after the period?
张阿姨将50000元钱存入银行，定期三年，年利率是2.75%，由于有急用必须要将存了两年半的存款取出，此时年利率按0.35%的活期计算，这样比原来到期后取得的利息少多少钱？
<gadget id="calculator">2.75 / 100</gadget>
<output>0.0275</output>

<gadget id="calculator">50_000 * 0.0275 * 3</gadget>
<output>4_125</output>

<gadget id="calculator">0.35 / 100</gadget>
<output>0.0035</output>

<gadget id="calculator">50_000 * 0.0035 * 2.5</gadget>
<output>437.5</output>

<gadget id="calculator">4_125 - 437.5</gadget>
<output>3_687.5</output>

<result>3_687.5</result>