(7 102 - 6 238) ÷ 54 + 7 × 681 ÷ 21

243

Reason:

• Interpret 7 102 = 7102 and 6 238 = 6238.
• (7102 − 6238) = 864; 864 ÷ 54 = 16.
• 7 × 681 = 4767; 4767 ÷ 21 = 227.
• Sum: 16 + 227 = 243.