Step one : Buy new cheap membrane keyboard with no warranty.

Step 2 : unbox & see good quality components 7 appreciate it

Step 3 : Type in huge articles & replies with it.

Step 4 : re read whats typed 7 find mistakes

step 5 :  find a lot of number "7" in the typed text

Step 5 : realize actuation pressure for the num key "7" is different from every other & the special character "&" need to be retyped in with a stronger pressure each time.

Step 6 :