8984 : 8 = 1123
$\snippet{name: long_division, x: 8984, y: 8}$
 
9386 : 2 = 4693
$\snippet{name: long_division, x: 9386, y: 2}$
 
907 * 9 − 852 : 3 = 8163 − 284 = 7879
$\snippet{name: column_multiplication, x: 907, y: 9}$
 
$\snippet{name: long_division, x: 852, y: 3}$
 
$\snippet{name: op_column, sign: '-', x: 8163, y: 284, z: 7879}$
 
840 * 6 − 795 : 3 = 5040 − 265 = 4775
$\snippet{name: column_multiplication, x: 840, y: 6}$
 
$\snippet{name: long_division, x: 795, y: 3}$
 
$\snippet{name: op_column, sign: '-', x: 5040, y: 265, z: 4775}$
 
8 * (739 + 564) = 8 * 1303 = 10424
$\snippet{name: op_column, sign: '+', x: 739, y: 564, z: 1303}$
 
$\snippet{name: column_multiplication, x: 1303, y: 8}$
 
9 * (1010 − 235) = 9 * 775 = 6975
$\snippet{name: op_column, sign: '-', x: 1010, y: 235, z: 775}$
 
$\snippet{name: column_multiplication, x: 775, y: 9}$