If it's your foreskin go for it!
Depends on the care given to the lawnmower. Do you clean the undercarriage after every mow? Do you make sure the engine in not gunked up with dirt? A mower kept in good condition should last at least 10 years.
It means there are no bodies of water that can be used at a way to leave the area. It's like the state of Kansas. It has no oceans or rivers leading to an ocean.
For a full year it would be $90. But 8 months is 2/3's of the year so the interest would be $60.
The most is 140 but less is better.