Goal:
How to mail a letter.
Answer:
Once you've chosen the envelope for your letter, place it inside and lick the edge of the envelope to moisten the glue, then press it shut to seal the letter. Write the address and attach a stamp.

Goal:
how to sanitize a kitchen sponge?
Answer:
soak for five minutes in a quart of water and 3 tablespoons of bleach.

Goal:
How do I clean my car tires?
Answer:
Use a tire cleaner such as Armorall and spray it on your tires and let sit for a few minutes before using a stiff brush to scrub them.

Goal:
Flushing the bottom of the stringer with ground.
Answer:
Draw a line parallel to the top of the last step notch, and perpendicular to the side of it (where the bottom riser will eventually go). Cut this away to make the bottom of the stringer flush with the ground. Now test the stringer by setting it in place. Cut the top and bottom of the stringer to fit, then test-fit it before cutting it out. Make sure the height is accurate. Both top and bottom points should be flush before fastening.