Can someone please help me, i need to submit in 30minutes

5x + 2 = 12 solve the following equation. then place the correct number in the box provided.

65 8 7 4 5 6 8 4 3 2 1 9 5 6 4 2 1 6 5 1 5 1 3 2 3 5 multiply the third number in the first row by the seventh number in the third row. add this result to the fifth number in the second row. add to this total ten times the fourth number in the third row. subtract the eighth number in the first row from the result.

Icould really use some with this question.