The original price of a certain TV is 3,850 yuan. If the full 50 yuan is returned to 2 yuan, how much can you save by buying it now?
某电视原价3850元，如果满50元返2元，现在买可以节约多少元．
<gadget id="calculator">3_850 / 50</gadget>
<output>77</output>

<gadget id="calculator">77 * 2</gadget>
<output>154</output>

<result>154</result>