$19857 \overset{4}{-} (29716 \overset{1}{:} 68 \overset{3}{+} 192 \overset{2}{*} 64) = 19857 - (437 + 12288) = 19857 - 12725 = 7132$
1) $\snippet{name: long_division, x: 29716, y: 68}$;
2) $\snippet{name: column_multiplication, x: 192, y: 64}$;
3) $\snippet{name: op_column, sign: '+', x: '437', y: '12288', z: '12725'}$;
4) $\snippet{name: op_column, sign: '-', x: '19857', y: '12725', z: '7132'}$.

$17775 \overset{4}{+} (601 \overset{1}{*} 508 \overset{3}{-} 11094 \overset{2}{:} 86) = 17775 + (305308 - 129) = 17775 + 305179 = 322954$
1) $\snippet{name: column_multiplication, x: 601, y: 508}$;
2) $\snippet{name: long_division, x: 11094, y: 86}$;
3) $\snippet{name: op_column, sign: '-', x: '305308', y: '129', z: '305179'}$;
4) $\snippet{name: op_column, sign: '+', x: '17775', y: '305179', z: '322954'}$.

$(678 \overset{2}{+} 1125 \overset{1}{:} 75) \overset{3}{*} 64 \overset{4}{-} 32702 = (678 + 15) * 64 - 32702 = 693 * 64 - 32702 = 44352 - 32702 = 11650$
1) $\snippet{name: long_division, x: 1125, y: 75}$;
2) $\snippet{name: op_column, sign: '+', x: '678', y: '15', z: '693'}$;
3) $\snippet{name: column_multiplication, x: 693, y: 64}$;
4) $\snippet{name: op_column, sign: '-', x: '44352', y: '32702', z: '11650'}$.

$17814 \overset{4}{+} (2209 \overset{1}{:} 47 \overset{2}{+} 862) \overset{3}{*} 14 = 17814 + (47 + 862) * 14 = 17814 + 909 * 14 = 17814 + 12726 = 30540$
1) $\snippet{name: long_division, x: 2209, y: 47}$;
2) $\snippet{name: op_column, sign: '+', x: '862', y: '47', z: '909'}$;
3) $\snippet{name: column_multiplication, x: 909, y: 14}$;
4) $\snippet{name: op_column, sign: '+', x: '17814', y: '12726', z: '30540'}$.