((456*789-123)/(333+788*456)).
((456*789-123)/(333+788*456))．
<gadget id="calculator">456 * 789</gadget>
<output>359_784</output>

<gadget id="calculator">359_784 - 123</gadget>
<output>359_661</output>

<gadget id="calculator">788 * 456</gadget>
<output>359_328</output>

<gadget id="calculator">333 + 359_328</gadget>
<output>359_661</output>

<gadget id="calculator">359_661 / 359_661</gadget>
<output>1</output>

<result>1</result>