Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

What does this rebus means ?

PROG WORKRESS

If,
9 * 8 * 7 = 65
8 * 7 * 6 = 50
7 * 6 * 5 = 37

Find
6 * 5 * 4 = ?

There are two insects on a tile. Insect X is sitting on one side of the tile (point A) and Insect Y is sitting opposite on the other side of the tile (point B). Now both of them decide to change their position and thus X starts crawling to point B and Y starts crawling to point A. When they meet and pass each other in between, X takes 20 seconds to reach B and Y takes just 5 seconds to reach A.

Can you calculate the total time each of the insects took to change their positions?

By using 'because' continuously three times, can you make an English statement ?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

Can you Find and name the hidden bird in the picture below ?

Solve below popular number sequence
314 159 265 358 979 323 846 ?

What does this rebus puzzle means ?

I have 50 feet long of cloth, I need to create 50 handkerchiefs each size of 1 foot. I take one minute to cut a 1-foot handkerchief. So how long will it take to cut 50 handkerchiefs?