Вычисли в столбик: 28 000*8 12 300* 3 3800 × 40 1090 × 700 30 700*9 234 910* 4 26430 * 70 65900 * 700 20 200*4 492 000 * 7 600 × 580 5 430 • 600 6510 : 30 46800 : 600 38960 : 80 36800:800
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