Banqiao Primary School has a new batch of tables and chairs. It costs 1520 yuan to buy 40 chairs and 735 yuan to buy 7 tables. According to this calculation, how much does it cost to buy a set of tables and chairs?
板桥小学新进一批桌椅．买40把椅子花1520元，7张桌子花735元．照这样计算，买一套桌椅要用多少元？
<gadget id="calculator">1_520 / 40</gadget>
<output>38</output>

<gadget id="calculator">735 / 7</gadget>
<output>105</output>

<gadget id="calculator">38 + 105</gadget>
<output>143</output>

<result>143</result>