Teacher Wang plans to buy a house of 450,000 yuan. Due to insufficient funds, Teacher Wang decides to pay (3/5) the down payment first, and borrow the rest from the bank. How much does Mr. Wang need to borrow from the bank?
王老师打算购买一套45万元的住房，由于资金不足，王老师决定先支付(3/5)的首付款，其余部分向银行贷款．王老师需向银行贷款多少万元？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">45 * (3/5)</gadget>
<output>27</output>

<gadget id="calculator">45 - 27</gadget>
<output>18</output>

<result>18</result>