A certain engineering team wants to build a road. In the middle of the term, group A is responsible for repairing this road (2/5), and completed this part (3/7) in the first 3 days. The remaining roads are all completed by group B. How much of this road will be repaired?
某工程队要修建一条公路，期中甲组负责修这条公路的(2/5)，前3天就完成了这部分的(3/7)，余下的公路全部由乙组来完成，乙组要修这条路的几分之几？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">(2/5) * (3/7)</gadget>
<output>6/35 = around 0.171429</output>

<gadget id="calculator">1 - (6/35)</gadget>
<output>29/35 = around 0.828571</output>

<result>29/35 = around 0.828571</result>