My aunt opened a grocery store. One day she bought 560 dolls from other places, but 70 of them were damaged on the way. If she wants to make a profit of 5%, how much should the price of each doll be increased?
阿姨开了一个杂货店，一天她从外地购进560个洋娃娃，哪知途中损坏了70个，如果她想获利5%，每个应加价多少．
<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 + (1/20)</gadget>
<output>21/20 = around 1.05</output>

<gadget id="calculator">560 - 70</gadget>
<output>490</output>

<gadget id="calculator">1 / 490</gadget>
<output>1/490 = around 0.002041</output>

<gadget id="calculator">560 * (21/20) * (1/490)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">(6/5) - 1</gadget>
<output>1/5 = around 0.2</output>

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

<result>1/5 = around 0.2</result>