(39000 + 530 * 400) : 100
54000 − 840 * 300 : 10
5264 : 7 * 30
4384 : 8 * 50

(39000 + 530 * 400) : 100 = 251000 : 100 = 2510
54000 − 840 * 300 : 10 = 54000 − 252000 : 10 = 54000 − 25200 = 28800
5264 : 7 * 30 = 752 * 30 = 22560
$\snippet{name: long_division, x: 5264, y: 7}$
$\snippet{name: op_column, sign: '×', x: '752 ', y: '30', z: '22560 '}$
4384 : 8 * 50 = 548 * 50 = 27400
$\snippet{name: long_division, x: 4384, y: 8}$
$\snippet{name: op_column, sign: '×', x: '548 ', y: '50', z: '27400 '}$