Column calculation: Subtract 30% of (2/5) from 1, divide the difference by (11/50), what is the quotient?
列式计算：从1里面减去(2/5)的30%，所得的差除以(11/50)，商是多少？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(2/5) * (3/10)</gadget>
<output>3/25 = around 0.12</output>

<gadget id="calculator">1 - (3/25)</gadget>
<output>22/25 = around 0.88</output>

<gadget id="calculator">11 / 50</gadget>
<output>11/50 = around 0.22</output>

<gadget id="calculator">(22/25) / (11/50)</gadget>
<output>4</output>

<result>4</result>