Li-Wei Inc. recorded the following information for its main product: Required: 1. Compute the contribution margin ratio and break-even sales. 2. What is the margin of safety in dollars and units, and the degree of operating leverage? (Round "Degree of operating leverage" to 2 decimal places and the rest to the nearest whole number.) 2. What is the margin of safety in dollars and units, and the degree of operating leverage? (Round "Degree of operating leverage" to 2 decimal places and the rest to the nearest whole number.)