99999*20%+9999*20%+999*20%+99*20%+9*20%
99999*20%+9999*20%+999*20%+99*20%+9*20%
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">99_999 * (1/5)</gadget>
<output>99_999/5 = around 19_999.8</output>

<gadget id="calculator">9_999 * (1/5)</gadget>
<output>9_999/5 = around 1_999.8</output>

<gadget id="calculator">999 * (1/5)</gadget>
<output>999/5 = around 199.8</output>

<gadget id="calculator">99 * (1/5)</gadget>
<output>99/5 = around 19.8</output>

<gadget id="calculator">9 * (1/5)</gadget>
<output>9/5 = around 1.8</output>

<gadget id="calculator">(99_999/5) + (9_999/5) + (999/5) + (99/5) + (9/5)</gadget>
<output>22_221</output>

<result>22_221</result>