3000 + 40 + 200 + 7 = (a)  

50 + 8000 + 3 + 100= (a)  

2000 + 7 + 50 + 300= (a)  

8 + 7000 + 100 + 20= (a)  

600 + 3000 + 1 + 70= (a)  

9000 + 2 + 500 + 20= (a)  

5 + 2000 + 40 + 200= (a)  

7000 + 1 + 800 + 50= (a)  

40 + 1000 + 300 + 8= (a)  

700 + 5000 + 4 = (a)  

6 + 40 + 9000 = (a)  

600 + 30 + 2000 = (a)  

2000 + 5 + 400 = (a)  

60 + 5000 + 100 = (a)  

7000 + 4 + 800 = (a)  

5000 + 40 + 1 = (a)  

20 + 5000 + 200 = (a)  

300 + 8000 + 7 = (a)  

7000 + 90 + 100 = (a)