Countdown Numbers Game

Use numbers and four operations (adding, subtracting, multiplying, dividing) to get the target. You may change all the numbers and target! Don't forget; subtractions causing negative results and divisions causing non-integer results not allowed. You can back to beginning anytime you want. If you stuck at some point, you can let your phone or tablet to solve the problem for you.
You can see all steps of solutions line by line. Have fun!