To calculate the cost of 3.26 meters of lace, we can use the formula cost = (length * price) / 0.8. Substituting in the given values, we get:
cost = (3.26 * 5.60) / 0.8
Solving for cost, we get a value of cost = $21.84. Therefore, 3.26 meters of lace will cost $21.84.