852000:71= 21000:30= 814000:370= 83000:50= 87500:35= 444000:60= 294000:980= 5740:2= 470*3= 176+756= 125-63= 1120:56= 38400:600= 780*9= 104+337= 712-21= 4920:82= 612000:600= 880*80=

Sure! Here are the calculations for each of the operations you've provided:

1. 852000 ÷ 71 = 12000
2. 21000 ÷ 30 = 700
3. 814000 ÷ 370 = 2200
4. 83000 ÷ 50 = 1660
5. 87500 ÷ 35 = 2500
6. 444000 ÷ 60 = 7400
7. 294000 ÷ 980 = 300
8. 5740 × 2 = 11480
9. 470 × 3 = 1410
10. 176 + 756 = 932
11. 125 - 63 = 62
12. 1120 ÷ 56 = 20
13. 38400 ÷ 600 = 64
14. 780 × 9 = 7020
15. 104 + 337 = 441
16. 712 - 21 = 691
17. 4920 ÷ 82 = 60
18. 612000 ÷ 600 = 1020
19. 880 × 80 = 70400

Let me know if you need help with anything else!