The formula calculates a number whose three fourths is equal to three fifths of four

The formula calculates a number whose three fourths is equal to three fifths of four

This number = 4 × 3 / 5 △ 3 / 4 = 3.2

The sum of 310 and 15 is equal to 45 of a number. What is the number___ ．

3 of 4 plus 7 of 18, 3 of 4 plus 11 of 36, 3 of 4 plus 132 of 16, 7 of 6 minus 7 of 5, 4 of 6 minus 7 of 10, 6 of 6 minus 7 of 8
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3 / 4 + 7 / 18 = 41 / 363 / 4 + 11 / 36 = 19 / 183 / 4 + 132 / 16 = 144 / 16 = 97 / 6-4 / 5 = (7 × 5-4 × 6) / (6 × 5) = 11 / 307 / 6-6 / 10 = (7 × 10-6 × 6) / (6 × 10) = 17 / 30 7 / 6-7 / 8 = (7 × 4-7 × 3) / 24 = 7 / 24 please accept in time!