Hangzhou Unified Payment Card Refund Rules, for unified payment tolls whose payment period is valid from January 1, 2010 to December 31, 2012, the refund will be based on the standard of 15 yuan/month·ton, and it will be refunded at the end of 2010 for one year Calculation of lump-sum deposit and withdrawal interest rate (ie 2.75%). The calculation formula is: refund amount = 15 * (the month where the payment is valid - January 2010 + 1) * tonnage of payment + interest, the payment for Wen Yan's car (tonnage: 1 ton) is valid until March 2011, ask: How much can I get refunded for this car? (retain one decimal place)
杭州统缴卡退费细则，对缴费有效期在2010年1月1日至2012年12月31日期间的统缴通行费，按15元/月•吨标准退费，并按2010年年底一年期整存整取利率计算(即2.75%)．计算公式为：退费额=15*(缴费有效期止所在月-2010年1月+1)*缴费吨位+利息，文彦家的轿车(吨位：1吨)缴费有效期至2011年3月，问：这辆车还可以退费多少元？(得数保留一位小数)
<gadget id="calculator">14 + 1</gadget>
<output>15</output>

<gadget id="calculator">15 * 15 * 1</gadget>
<output>225</output>

<gadget id="calculator">2.75 / 100</gadget>
<output>0.0275</output>

<gadget id="calculator">15 * 24 * 0.0275</gadget>
<output>9.9</output>

<gadget id="calculator">225 + 9.9</gadget>
<output>234.9</output>

<result>234.9</result>