Timer with Start Stop Button in Milliseconds that does calculation with Time recorded

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VB

I am looking to create a program in VB Express that does the following: 1. Asks for a number. Example say 90.1545254556 to 10 deciamal places
2. Then Takes a timing in Milliseconds using a stop start button Example Say 4.3457633456 to 10 decimal places if possible.
3. Program Automatically gives you the answer I want it to do this (number entered) 90.1545254556 * (timing) 4.3457633456 = 391.790232164 Units - Keep this answer somewhere displayed on screen.
4. Then after the above sequences and seperate to the above sequence the program asks you to enter two timing figures the first timing reads "from" for example .9000000 (Seconds) the second timing reads "To" for example 1.100000 (seconds)
5. Then another stop start button appears after this (just one start/stop button). When you click start and then stop it measures the time and displays the time in Millieseconds and if it is between the above example timing of .9000000 to 1.100000 or whatever you entered between those two times after clicking stop it will display Ready and take no further timings. If the timings go above 1.100000 seconds then it will "out of reach" and stop and then go back to point 2.
6. Say you click start and then stop and the timer displays .8000000 seconds it is not yet in range I want the stop start button to immediately start again as soon as you click stop on the first timing. I want it to do this as many times as it takes to get into the correct range of .9000000 to 1.1000000 if it goes above 1.100000 then I want it to say out of range and stop.
7. Then after it has done this I want it to Say "start again" and go back to Point 2 keeping the original figure of 90.1545254556 that was enetered at the begiining and then start again with another timing from point 2 which might be different to 4.3457633456.

Thanks for your help, From Paul