• Computes 3 % 3, which is 0
• Computes "" + 0, which is "0"
• Creates dig and sets it to point to "0"
• Checks if 3 / 3, which is 1 is > 0, which is true
• Computes "0" + ____
• Calls recur with 3 / 3, which is 1

Resulting call stack

r(1)
r(3)     dig -> "0"    "0" + ____
r(10)    dig -> "1"    "1" + ____
r(32)    dig -> "2"    "2" + ____

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