Given two hexadecimal numbers, write a Python program to compute their sum.

**Examples:**

Input:a = “01B”, b = “378”

Output:393

Explanation:

B (11 in decimal) + 8 = 19 (13 in hex), hence addition bit = 3, carry = 1

1 + 7 + 1 (carry) = 9, hence addition bit = 9, carry = 0

0 + 3 + 0 (carry) = 3, hence addition bit = 3, carry = 0

01B + 378 = 393

Input:a = “AD”, b = “1B”

Output:C8

Explanation:

D(13 in Dec) + B(11 in Dec) = 24(18 in hex), hence addition bit = 8, carry = 1

A(10 in Dec) + 1 + 1 (carry)= 12 (C in hex), addition bit = C carry = 0

AD + 1B = C8

**Approach:**

To add two hexadecimal values in python we will first convert them into decimal values then add them and then finally again convert them to a hexadecimal value. To convert the numbers we will make use of the **hex() **function The *hex(*) function is one of the built-in functions in Python3, which is used to convert an integer number into its corresponding hexadecimal form. We will also use the **int() **function to convert the number to decimal form. The *int()* function in Python and Python3 converts a number in the given base to decimal.

**Below are the implementations based on the above approach:**

**Example 1:**

## Python3

`# Python program to add two hexadecimal numbers. ` ` ` `# Driver code ` `# Declaring the variables ` `a ` `=` `"01B"` `b ` `=` `"378"` ` ` `# Calculating hexadecimal value using function ` `sum` `=` `hex` `(` `int` `(a, ` `16` `) ` `+` `int` `(b, ` `16` `)) ` ` ` `# Printing result ` `print` `(` `sum` `[` `2` `:]) ` |

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**Output:**

393

**Example 2:**

## Python3

`# Python program to add two hexadecimal numbers. ` ` ` `# Driver code ` `# Declaring the variables ` `a ` `=` `"B"` `b ` `=` `"C"` ` ` `# Calculating hexadecimal value using function ` `sum` `=` `hex` `(` `int` `(a, ` `16` `) ` `+` `int` `(b, ` `16` `)) ` ` ` `# Printing result ` `print` `(` `sum` `[` `2` `:]) ` |

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**Output:**

17

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