888,828+828,818

1,717,646

Brief check via column addition:

• 8+8 = 16 → write 6, carry 1
• 1+2+1 = 4
• 8+8 = 16 → write 6, carry 1
• 8+8+1 = 17 → write 7, carry 1
• 2+8+1 = 11 → write 1, carry 1
• 8+8+1 = 17 → write 7, carry 1
• carry 1 → 1

Result: 1,717,646