Условие:

2 * 5 + 15;
8 * 216;
20 − (1710);
35 − (14 + 6);
3 * 610;
7 * 213.

2 * 5 + 15 = 10 + 15 = 25
 
8 * 216 = 1616 = 0
 
20 − (1710) = 207 = 13
 
35 − (14 + 6) = 3520 = 15
 
3 * 610 = 1810 = 8
 
7 * 213 = 1413 = 1