(77609 + 427 * 209) : 236 − 589 = (77609 + 89243) : 236 − 589 = 166852 : 236 − 589 = 707 − 589 = 118
1)
$\snippet{name: column_multiplication, x: 209, y: 427}$
2)
$\snippet{name: op_column, sign: '+', x: '77609', y: '89243', z: '166852'}$
3)
$\snippet{name: long_division, x: 166852, y: 236}$
4)
$\snippet{name: op_column, sign: '-', x: '707', y: '589', z: '118'}$