Lawnmower Auction

The old man retired completely overgrown yard shortly for the tall grass will not be seen flower beds. Grandpa went to the store and bought a modern lawnmower, but does not know how to use it, if he will undertake to manage a difficult unit, in the yard there will be no grass, no flowers, and lawn mower hang herself on the rocks and break. Help the old man, move it with the mouse, your task - to mow grass on at least ninety percent.