((455+545*454)/(455*545-45*2)).
((455+545*454)/(455*545-45*2))．
<gadget id="calculator">545 * 454</gadget>
<output>247_430</output>

<gadget id="calculator">455 + 247_430</gadget>
<output>247_885</output>

<gadget id="calculator">455 * 545</gadget>
<output>247_975</output>

<gadget id="calculator">45 * 2</gadget>
<output>90</output>

<gadget id="calculator">247_975 - 90</gadget>
<output>247_885</output>

<gadget id="calculator">247_885 / 247_885</gadget>
<output>1</output>

<result>1</result>