There are peach trees, plum trees and lychee trees in the orchard. There are 28 more plum trees than lychee trees, 70 fewer lychee trees than peach trees, and the sum of peach and plum trees is 6 times as many as lychee trees. Tree.
果园里有桃树、李树和荔枝树，李树比荔枝树的3倍多28棵，荔枝树比桃树少70棵，桃树和李树总和是荔枝树的6倍，这三种树共有多少棵．
<gadget id="calculator">3 * 49</gadget>
<output>147</output>

<gadget id="calculator">147 + 28</gadget>
<output>175</output>

<gadget id="calculator">49 + 70</gadget>
<output>119</output>

<gadget id="calculator">49 + 175 + 119</gadget>
<output>343</output>

<result>343</result>