9x5
45x1
15x3
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4*45=180
45
To find the number you need to multiply by 3 to get 45, you can set up the equation 3x = 45, where x is the unknown number. To solve for x, you divide both sides by 3, which gives you x = 45 / 3. Therefore, you need to multiply 3 by 15 to get 45.
9*5 = 45
312 multiplied by 45 is 14,040.