3.75 by 4.23 by 36-125 by 0.423 by 2.8 3.75*4.23*36-125*0.423*2.8 =4.23*(3.75*36-12.5*2.8) =4.23*12.5*(0.3*36-2.8) =4.23*12.5*8 =423 0. How to get it; use the method of extracting common factor to seek advice from experts,

3.75 by 4.23 by 36-125 by 0.423 by 2.8 3.75*4.23*36-125*0.423*2.8 =4.23*(3.75*36-12.5*2.8) =4.23*12.5*(0.3*36-2.8) =4.23*12.5*8 =423 0. How to get it; use the method of extracting common factor to seek advice from experts,

3.75=12.5×0.3
In the second step, in order to put forward 12.5, we changed 3.75 to 12.5 × 0.3