(13*35)/(105*221)*153=how much.
(13*35)/(105*221)*153=多少．
<gadget id="calculator">13 * 35</gadget>
<output>455</output>

<gadget id="calculator">105 * 221</gadget>
<output>23_205</output>

<gadget id="calculator">455 / 23_205</gadget>
<output>1/51 = around 0.019608</output>

<gadget id="calculator">(1/51) * 153</gadget>
<output>3</output>

<result>3</result>