add variables
50a+50a
what is 100a
111a+103b+1a+10b
what is 112a+113b
600/30
what is 20
100000*1
what is 100000
100x-600x
what is -500x
1000ab+1000cd
what is 1000ab+1000cd
00l+00l
what is 00l
900/1000
what is 0.9
100*100
what is 1000
90l-200l
what is 110l
1a+1e
what is 1a+1e
1a+2b+3c+100b+1b
what is 1a+103b+3c
100/2000
what is 0.05
.300*.900
what is 0.27
123m-456m-789m
what is -1122m
400p+400q
what is 400p+400q
123a+456a
what is 579a
.7/1000
what is 0.0007
567*3578
what is 2028726
098o-765o
what is -667o
500a+1a
what is 501a
123a+456b+789c
what is 123a+456b+789c
.2/.1
what is 2.
123*456
what is 56088
246u-135u
what is 111u