19. Solve the multiplication problems: 346 x 103 649 x 206 438 x 504

Решение:

1. \( 346 \times 103 = 35638 \)
2. \( 649 \times 206 = 133694 \)
3. \( 438 \times 504 = 220752 \)

Ответ: 1. 35638, 2. 133694, 3. 220752.