Solve examples on actions and in a column 10000-2178*6:4+267 487*8+45270:3:10 240*3+(4540:20) 560:7+(3820-450)

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The 1st example =2000 2nd example =5405 3rd example =947 4-1 example =3450. It is correct. 1) 1) 2178*6=13068 2)13068/4=3267 3)10000-3267=6733 4)6733+267=7000
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Answer add