(900 − 48 * 4) : 4 = (900 − 192) : 4 = 708 : 4 = 177
1) $\snippet{name: column_multiplication, x: 48, y: 4}$
2) $\snippet{name: op_column, sign: '-', x: '900', y: '192', z: '708'}$
3) $\snippet{name: long_division, x: 708, y: 4}$
 
300 : 50 + 470 = 30 : 5 + 470 = 6 + 470 = 476
 
560 : (795 − 788) = 560 : 7 = 80
 
720 : 9 * 8 − 563 = 80 * 8 − 563 = 640 − 563 = 77
 
504 : 56 * 100 = 9 * 100 = 900
$\snippet{name: long_division, x: 504, y: 56}$
 
376 : 47 − 8 = 8 − 8 = 0
$\snippet{name: long_division, x: 376, y: 47}$