0.1+0.06+0.006+0.0006+0.00006+...=how much.
0.1+0.06+0.006+0.0006+0.00006+…=多少．
<gadget id="calculator">6 / 90</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">0.1 + (1/15)</gadget>
<output>0.166667</output>

<result>0.166667</result>