20% of 30, half of 36, 2/3 of 15, 50% of 50, 1/5 + 3/5, 70/100 as a %, 588997-444679, 176x45, 5+3/4, 252 dived by 12, 225 dived by 5, 360 as an angle , 90 as a angle, what is the sum of all angles in a full circle, 15x25, 7,14,21 what is the next number?, 13,26,39 what is the next number?, 2,5,8,11 what is the next number?, 25x26+4+3=, 753+215-159.

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