Wang Bing's father went to the bank to withdraw money. The first time he withdrew half of the deposit, more than 50 yuan, and the second time he withdrew the remaining half, more than 100 yuan. There was still 100 yuan left, so how much was there originally?
王冰的爸爸去银行取款，第一次取了存款的一半多50元，第二次取了余下的一半多100元，还剩下100元，那么原来有多少元．
<gadget id="calculator">100 + 100</gadget>
<output>200</output>

<gadget id="calculator">200 * 2</gadget>
<output>400</output>

<gadget id="calculator">400 + 50</gadget>
<output>450</output>

<gadget id="calculator">450 * 2</gadget>
<output>900</output>

<result>900</result>