42 − 57 : 19 * 14 = 0
6 * (69 : 23 + 7) = 60
96 : (4 * 18 − 56) = 6
68 : (96 − 62) * 9 = 18
5 * (98 − 10 * 8) = 90
14 * (19 * 4 − 71) = 70

Вычисления
$42 \overset{3}{-} 57 \overset{1}{:} 19 \overset{2}{*} 14 = 0$
1) 57 : 19 = 3
2) 3 * 14 = 3 * (10 + 4) = 3 * 10 + 3 * 4 = 30 + 12 = 42
3) 42 − 42 = 0
 
$6 \overset{3}{*} (69 \overset{1}{:} 23 \overset{2}{+} 7) = 60$
1) 69 : 23 = 3
2) 3 + 7 = 10
3) 6 * 10 = 60
 
$96 \overset{3}{:} (4 \overset{1}{*} 18 \overset{2}{-} 56) = 6$
1) 4 * 18 = 4 * (10 + 8) = 4 * 10 + 4 * 8 = 40 + 32 = 72
2) 72 − 56 = 16
3) 96 : 16 = 6
 
$68 \overset{2}{:} (96 \overset{1}{-} 62) \overset{3}{*} 9 = 18$
1) 96 − 62 = 34
2) 68 : 34 = 2
3) 2 * 9 = 18
 
$5 \overset{3}{*} (98 \overset{2}{-} 10 \overset{1}{*} 8) = 90$
1) 10 * 8 = 80
2) 98 − 80 = 18
3) 5 * 18 = 5 * (10 + 8) = 5 * 10 + 5 * 8 = 50 + 40 = 90
 
$14 \overset{3}{*} (19 \overset{1}{*} 4 \overset{2}{-} 71) = 70$
1) 19 * 4 = (10 + 9) * 4 = 10 * 4 + 9 * 4 = 40 + 36 = 76
2) 76 − 71 = 5
3) 14 * 5 = (10 + 4) * 5 = 10 * 5 + 4 * 5 = 50 + 20 = 70