Yellow beads are 1 unit. Red beads are twice as many, so 2 units. One unit is 806 beads.

[[model:questions/solutions/q3183.png]]

• 1 unit → 806 (yellow)
• Red = 2 units → 2 × 806 = 1612

The number of red beads is 1612.
Check: 1612 = 2 × 806. ✓