3010 − 5614 : 7 + 9042 = 3010 − 802 + 9042 = 2208 + 9042 = 11250
$\snippet{name: long_division, x: 5614, y: 7}$
$\snippet{name: op_column, sign: '-', x: '3010', y: '802', z: '2208'}$
$\snippet{name: op_column, sign: '+', x: '2208', y: '9042', z: '11250'}$
 
(40179 − 15395 : 5) * 4 = (40179 − 3079) * 4 = 37100 * 4 = 148400
$\snippet{name: long_division, x: 15395, y: 5}$
$\snippet{name: op_column, sign: '-', x: '40179', y: '3079', z: '37100'}$
$\snippet{name: column_multiplication, x: 37100, y: 4}$
 
(90 − 42 : 3 * 2) : 2 = (90 − 14 * 2) : 2 = (90 − 28) : 2 = 62 : 2 = 31
 
15 * (54 : 3 − 84 : 7) = 15 * (54 : 3 − 84 : 7) = 15 * (18 − 12) = 15 * 6 = 90