A bag of rice, after eating (1/4), add 8 kilograms, then the rice in the bag is equivalent to (4/5) of the original rice. How many kilograms is this bag of rice originally?
一袋大米，吃去(1/4)后，再加进8千克，这时袋里的大米相当于原来大米的(4/5)．这袋大米原有多少千克？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(4/5) - (3/4)</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">8 / (1/20)</gadget>
<output>160</output>

<result>160</result>