0.25*19+0.75*27.
0.25*19+0.75*27．
<gadget id="calculator">0.25 * 19</gadget>
<output>4.75</output>

<gadget id="calculator">0.75 * 27</gadget>
<output>20.25</output>

<gadget id="calculator">4.75 + 20.25</gadget>
<output>25</output>

<result>25</result>