8 300:10-30 =800
36*1000+20 =36020
200:(310-300):5 =4
400:(460-360)*4 =16
61000-1=60999
49099+1=49100
8 300:10-30 =800
36*1000+20 =36020
200:(310-300):5 =4
400:(460-360)*4 =16
61000-1=60999
49099+1=49100