0.25-(11/15)+(3/4)-(4/15).
0.25-(11/15)+(3/4)-(4/15)．
<gadget id="calculator">11 / 15</gadget>
<output>11/15 = around 0.733333</output>

<gadget id="calculator">0.25 - (11/15)</gadget>
<output>-0.483333</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">4 / 15</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">(3/4) - (4/15)</gadget>
<output>29/60 = around 0.483333</output>

<gadget id="calculator">(-0.483333) + (29/60)</gadget>
<output>0</output>

<result>0</result>