Write a program in C# that multiplies large numbers.

The input will consist of two lines, each containing a non-negative decimal integer. The program should write the product of these integers to a single output line. The integers may have any number of digits.

Important: Your program may not use the BigNumber class, or any other library class that implements arbitrary-sized integers. Instead, you must perform the calculation yourself using fixed-sized integers and arrays.

Sample input:

293847293847 9375938475398 

Output:

2755094148271669286276106 

Sample input #2:

34987349875 0 

Output:

0