15*89/972/81．
15*89/972/81．
<gadget id="calculator">89 / 972 / 81</gadget>
<output>89/78_732 = around 0.00113</output>

<gadget id="calculator">15 * (89/78_732)</gadget>
<output>445/26_244 = around 0.016956</output>

<result>445/26_244 = around 0.016956</result>