(1/10)/(((7/15)-(1/5))*15)=
(1/10)/(((7/15)-(1/5))*15)=
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">7 / 15</gadget>
<output>7/15 = around 0.466667</output>

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

<gadget id="calculator">(7/15) - (1/5)</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">(4/15) * 15</gadget>
<output>4</output>

<gadget id="calculator">(1/10) / 4</gadget>
<output>1/40 = around 0.025</output>

<result>1/40 = around 0.025</result>