Python programming questions

+ 1 2 3 -> Output 6 as a result of 1+2+3
* 23 -> Output 6 as a result of 2 * 3
- 5 3 Run 2 -> 5 – 3 – 2 and output the resulting 0
/ 42 -> Output 2 as a result of 4/2
Q -> Exit Program

500 X 1 = 500 
100 X 2 = 200
 10 X 3 = 30
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Total 730