(3456780-345678)/(345678*3)=how much.
(3456780-345678)/(345678*3)=多少．
<gadget id="calculator">3_456_780 - 345_678</gadget>
<output>3_111_102</output>

<gadget id="calculator">345_678 * 3</gadget>
<output>1_037_034</output>

<gadget id="calculator">3_111_102 / 1_037_034</gadget>
<output>3</output>

<result>3</result>