①5*(1/10)+(2/5)/(5/3)②(3/25)/(1-((3/4)-(3/8)))③((2/3) +(4/15)*(5/6))/(20/21)④84*0.25+(1/4)*16⑤((7/9)+(5/6)-(1/4))* 72⑥(5/4)-((3/7)+(1/4)).
①5*(1/10)+(2/5)/(5/3)②(3/25)/(1-((3/4)-(3/8)))③((2/3)+(4/15)*(5/6))/(20/21)④84*0.25+(1/4)*16⑤((7/9)+(5/6)-(1/4))*72⑥(5/4)-((3/7)+(1/4))．
<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

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

<gadget id="calculator">(3/7) + (1/4)</gadget>
<output>19/28 = around 0.678571</output>

<gadget id="calculator">(5/4) - (19/28)</gadget>
<output>4/7 = around 0.571429</output>

<result>4/7 = around 0.571429</result>