public static int[] multiplynew(int[] arr1, int[] arr2){
        int len1 = arr1.length;
        int len2 = arr2.length;
        int len = len1 + len2;
        int[][] arr = new int[len1][len1+len2];

        for(int i=len2-1; i >= 0; i--){
            int carry = 0;
            int j=0;
            for(j=len1-1; j >= 0; j--){
                int shiftLeft = i + 1;
                arr[i][j + shiftLeft] = (arr1[j]*arr2[i] + carry) %10;
                carry = (arr1[j]*arr2[i]+carry) / 10;
            }
            arr[i][(i+1)+j] = carry;
        }

        int[] total = new int[len];
        int carry = 0;
        for(int j=len-1; j >= 0; j--){
            int s=0;
            for(int i=0; i < len2; i++){
                s += arr[i][j];
            }
            total[j] = (s + carry) % 10;
            carry = (s + carry)/10;
        }
        return total;
    }