estimating
v.v. to guess the size, value, or amount of something by using the information you have. You do this when you do not need an exact number.
v. forming an approximate judgment or opinion regarding the worth, amount, or size of something. Often involves using incomplete data to reach a calculated guess.
They are estimating the cost of the new roof.
The engineers are currently estimating the total time required to complete the bridge repairs before winter.
By estimating the potential impact of the new policy on local businesses, the council hopes to mitigate any negative economic consequences before the official rollout.
The verb is transitive and often takes a direct object or a 'that' clause.
estimating about the costestimating the costEstimate is a transitive verb and does not require a preposition before the object.