Four brothers bought a house for the old man. The eldest paid half of the money of the remaining three people, the second paid half of the remaining three (1/4), and the third paid half of the remaining three (1/4). /6), the fourth child paid 170,000 yuan, how much is this house in total.
兄弟四人给老人买了一套房子，老大出的钱是余下3人的一半，老二出的钱是其余3人的(1/4)，老三出的钱是余下3人的(1/6)，老四出了17万元，这套房子一共多少万元．
<gadget id="calculator">1 + 2</gadget>
<output>3</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 + 4</gadget>
<output>5</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + 6</gadget>
<output>7</output>

<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">1 - (1/3) - (1/5) - (1/7)</gadget>
<output>34/105 = around 0.32381</output>

<gadget id="calculator">17 / (34/105)</gadget>
<output>105/2 = around 52.5</output>

<result>105/2 = around 52.5</result>