$11 \overset{2}{*} (1040 \overset{1}{-} 619) \overset{3}{+} 752 = 11 * 421 + 752 = 4631 + 752 = 5383$
1) $\snippet{name: op_column, sign: '-', x: '1040', y: '619', z: '421'}$;
2) $\snippet{name: column_multiplication, x: 421, y: 11}$;
3) $\snippet{name: op_column, sign: '+', x: '4631', y: '752', z: '5383'}$.

$7200 \overset{3}{-} (298 \overset{1}{+} 142) \overset{2}{*} 15 = 7200 - 440 * 15 = 7200 - 6600 = 600$
1) $\snippet{name: op_column, sign: '+', x: '298', y: '142', z: '440'}$;
2) ;
3) $\snippet{name: op_column, sign: '-', x: '7200', y: '6600', z: '600'}$.

$(980 \overset{1}{-} 879) \overset{3}{*} (436 \overset{2}{-} 379) = 101 * 57 = 5757$
1) $\snippet{name: op_column, sign: '-', x: '980', y: '879', z: '101'}$;
2) $\snippet{name: op_column, sign: '-', x: '436', y: '379', z: '57'}$;
3) $\snippet{name: column_multiplication, x: 101, y: 57}$.

$(201 \overset{2}{-} 4590 \overset{1}{:} 45) \overset{3}{*} 101 = (201 - 102) * 101 = 99 * 101 = 9999$
1) $\snippet{name: long_division, x: 4590, y: 45}$;
2) $\snippet{name: op_column, sign: '-', x: '201', y: '102', z: '99'}$;
3) $\snippet{name: column_multiplication, x: 101, y: 99}$.