(1) 728÷13 +195u.p5d*d-K'_/X4T/r.e0I+b
算式:提示;?7~3K6L4T5u.p5d*d-K'_/X4T/r.e0I+b
=-R9q2W/L5u.p5d*d-K'_/X4T/r.e0I+b
(2) 285÷19×265u.p5d*d-K'_/X4T/r.e0I+b
算式:提示8P,F/~3|/X;`5u.p5d*d-K'_/X4T/r.e0I+b
=9P0N+Y1p8i3w:b)^2V4\;f,q3Y*h5u.p5d*d-K'_/X4T/r.e0I+b
(3) 708÷(86 - 27)5u.p5d*d-K'_/X4T/r.e0I+b