There are several ways to divide 210 by 35

There are several ways to divide 210 by 35

210÷35
=210÷7÷5
=30÷5
=6
210÷35
=210÷5÷7
=42÷7
=6
210÷35
=210×2÷（35×2）
=420÷70
=6

A number divided by 5 more than 2, divided by 7 more than 3, then this number divided by 35 more than how much? (hope to use primary school method to solve)

This number is 17, and the rest is 17

A simple algorithm of dividing 5.8 by 1.25

5.8/1.25
=5.8*5/4
=5.8-5.8/4
=5.8-1.45
=4.35

A simple algorithm for dividing 1 / 3 by (2 / 3-2 / 5) * 3 / 5
One third is one third * is multiplied by

1/3÷(2/3-2/5)*3/5
=1/3*3/5÷(2/3-2/5)
=1/5÷(2/3-2/5)
=1/5÷(10/15-6/15)
=1/5÷4/15
=1/5x15/4
=3/4