10-2•7525:2150+79465-3442•23

Result: 302

Steps:

• Interpret ":" as division. 2 × 7525 = 15050; 15050 ÷ 2150 = 7.
• 3442 × 23 = 79,166.
• So the expression is 10 − 7 + 79,465 − 79,166.
• Compute: (10 − 7) = 3; 3 + 79,465 = 79,468; 79,468 − 79,166 = 302.