1.5*((19/21)/6(1/3)*(0.7-0.66))*4.9.
1.5*((19/21)/6(1/3)*(0.7-0.66))*4.9．
<gadget id="calculator">19 / 21</gadget>
<output>19/21 = around 0.904762</output>

<gadget id="calculator">3 / 19</gadget>
<output>3/19 = around 0.157895</output>

<gadget id="calculator">(19/21) * (3/19) * 25</gadget>
<output>25/7 = around 3.571429</output>

<gadget id="calculator">1.5 * (25/7) * 4.9</gadget>
<output>26.25</output>

<result>26.25</result>