In order to control the excessively rising housing prices, the State Council issued a new policy on housing loans in January 2011: the down payment ratio was raised from no less than 50% to no less than 60% for a family buying a second apartment. Xiao Zhang’s family is now planning to buy a house with a total price of 850,000 yuan with a loan (Xiao Zhang’s family already has a house). What is the minimum down payment of 10,000 yuan?
为调控过快上涨的房价，国务院于2011年元月出台一项关于住房贷款的新政策：家庭购买第二套信房，首付款比例从不低于50%上调至不低于60%．小张家现打算贷款购买一套总价为85万元的住房(小张家已有一套房子)，首付款最少要多少万元？
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">85 * (3/5)</gadget>
<output>51</output>

<result>51</result>