How do we form the comparative and superlative degrees of adjectives ending in -le?

How do we form the comparative and superlative degrees of adjectives ending in -le?

To form the comparative degree of adjectives ending in -le, we drop the -le and add -er. For example, "simple" becomes "simpler."

To form the superlative degree of adjectives ending in -le, we drop the -le and add -est. For example, "simple" becomes "simplest."