Решим примеры по действиям.
$$8 \cdot 24372 = 194976$$
$$12143 + 11778 = 23921$$
$$23921 \cdot 7 = 167447$$
$$194976 - 167447 = 27529$$
$$100 \cdot (11372 - 10599) = 100 \cdot 773 = 77300$$
$$19060 \cdot 4 = 76240$$
$$77300 + 6 + 76240 = 153546$$
$$(24375 - 3979) \cdot 8 + 90 \cdot 10 : 5$$
$$24375 - 3979 = 20396$$
$$20396 \cdot 8 = 163168$$
$$90 \cdot 10 = 900$$
$$900 : 5 = 180$$
$$163168 + 180 = 163348$$
$$180 : 12 \cdot 1000 – 906 : 3 + 3007 \cdot 2$$
$$180 : 12 = 15$$
$$15 \cdot 1000 = 15000$$
$$906 : 3 = 302$$
$$3007 \cdot 2 = 6014$$
$$15000 - 302 + 6014 = 20712$$
Ответ: 1) 27529; 2) 153546; 3) 163348; 4) 20712