$136 \overset{2}{*} (668 \overset{1}{-} 588) \overset{4}{-} 404 \overset{3}{*} 25 = 780$
1)
$\snippet{name: op_column, sign: '-', x: 668, y: 588, z: 80}$
2)
$\snippet{name: column_multiplication, x: 136, y: 80}$
3)
$\snippet{name: column_multiplication, x: 404, y: 25}$
4)
$\snippet{name: op_column, sign: '-', x: 10880, y: 10100, z: 780}$

$1540 \overset{1}{:} 11 \overset{3}{+} 1890 \overset{2}{:} 9 \overset{4}{+} 982 = 1332$
1)
$\snippet{name: long_division, x: 1540, y: 11}$
2)
$\snippet{name: long_division, x: 1890, y: 9}$
3)
$\snippet{name: op_column, sign: '+', x: 140, y: 210, z: 350}$
4)
$\snippet{name: op_column, sign: '+', x: 350, y: 982, z: 1332}$

$1953 \overset{4}{+} (17432 \overset{2}{-} 56 \overset{1}{*} 223) \overset{3}{:} 16 = 1644$
1)
$\snippet{name: column_multiplication, x: 56, y: 223}$
2)
$\snippet{name: op_column, sign: '-', x: 17432, y: 12488, z: 4944}$
3)
$\snippet{name: long_division, x: 4944, y: 16}$
4)
$\snippet{name: op_column, sign: '+', x: 1953, y: 309, z: 1644}$

$6010 \overset{4}{-} (130 \overset{1}{*} 52 \overset{3}{-} 68890 \overset{2}{:} 83) = 80$
1)
$\snippet{name: column_multiplication, x: 130, y: 52}$
2)
$\snippet{name: long_division, x: 68890, y: 83}$
3)
$\snippet{name: op_column, sign: '-', x: 6760, y: 830, z: 5930}$
4)
$\snippet{name: op_column, sign: '-', x: 6010, y: 5930, z: 80}$