Medium · Math

Multiply string numbers

Given two non-negative integers num1 and num2 as decimal strings (no leading zeros except "0" itself), return their product as a decimal string without converting the whole inputs to built-in integers.

Examples

Example 1

{
  "num1": "12",
  "num2": "34"
}

Output: 408

Example 2

{
  "num1": "123",
  "num2": "45"
}

Output: 5535

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