A bag of flour eats (1/4) of the total amount on the first day and (1/3) of the total amount on the second day, exactly 84 kg. How many kilograms is this bag of flour in total?
一袋面粉，第一天吃去总数的(1/4)，第二天吃去总数的(1/3)，吃去的正好是84千克．这袋面粉一共有多少千克？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

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

<gadget id="calculator">(1/4) + (1/3)</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">84 / (7/12)</gadget>
<output>144</output>

<result>144</result>