Calculation: (1+(1/2)+(1/3)+(1/4)+(1/5)+(1/6))*((1/2)+(1/3)+( 1/4)+(1/5)+(1/6)+(1/7))-(1+(1/2)+(1/3)+(1/4)+(1/5) +(1/6))*((1/2)+(1/4)+(1/5)+(1/6))
计算：(1+(1/2)+(1/3)+(1/4)+(1/5)+(1/6))*((1/2)+(1/3)+(1/4)+(1/5)+(1/6)+(1/7))-(1+(1/2)+(1/3)+(1/4)+(1/5)+(1/6))*((1/2)+(1/4)+(1/5)+(1/6))
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

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

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

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

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 + (1/2) + (1/3) + (1/4) + (1/5) + (1/6)</gadget>
<output>49/20 = around 2.45</output>

<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">(1/2) + (1/3) + (1/4) + (1/5) + (1/6) + (1/7)</gadget>
<output>223/140 = around 1.592857</output>

<gadget id="calculator">(49/20) * (223/140)</gadget>
<output>1_561/400 = around 3.9025</output>

<gadget id="calculator">(1/2) + (1/4) + (1/5) + (1/6)</gadget>
<output>67/60 = around 1.116667</output>

<gadget id="calculator">(49/20) * (67/60)</gadget>
<output>3_283/1_200 = around 2.735833</output>

<gadget id="calculator">(1_561/400) - (3_283/1_200)</gadget>
<output>7/6 = around 1.166667</output>

<result>7/6 = around 1.166667</result>