Write a function cumulative_mul that mutates the Tree t so that each node's label becomes the product of its label and all labels in the subtrees rooted at the node. def cumulative_mul(t): "" "Mutates...

>> t = Tree(1, [Tree(3, [Tree(5)]), Tr >>> cumulative_mul(t) >>> t Tree(105, [Tree(15, [Tree(5)]), Tree(7) II I| || "*** YOUR CODE HERE ***" "/>
Extracted text: Write a function cumulative_mul that mutates the Tree t so that each node's label becomes the product of its label and all labels in the subtrees rooted at the node. def cumulative_mul(t): "" "Mutates t so that each node's label II I| || the corresponding subtree rooted at t. >>> t = Tree(1, [Tree(3, [Tree(5)]), Tr >>> cumulative_mul(t) >>> t Tree(105, [Tree(15, [Tree(5)]), Tree(7) II I| || "*** YOUR CODE HERE ***"