What is the product of 309 minus 189 divided by 4800 and multiplied by 77?
309减去189的差除4800，再乘以77，积是多少？
<gadget id="calculator">309 - 189</gadget>
<output>120</output>

<gadget id="calculator">4_800 / 120</gadget>
<output>40</output>

<gadget id="calculator">40 * 77</gadget>
<output>3_080</output>

<result>3_080</result>