Clever calculation: 4.65*320+46.5*68.
巧算：4.65*320+46.5*68．
<gadget id="calculator">4.65 * 320</gadget>
<output>1_488</output>

<gadget id="calculator">46.5 * 68</gadget>
<output>3_162</output>

<gadget id="calculator">1_488 + 3_162</gadget>
<output>4_650</output>

<result>4_650</result>