On calculation and fractional division A 10 meter long rope, the first use of 1 / 5, the second use of 1 / 5 meters, there are () meters left Two thirds of an hour and one third of two hours are () minutes The 1 / 9 of 7 meters is as long as the 7 / 9 of () meters 5 / 7 of () tons is 10.5 tons A car can travel 30 kilometers in 2 / 5 hours, and it can travel () kilometers in 20 minutes A car runs 30 kilometers in 2 / 5 hours. According to this calculation, it takes () hours to travel 25 kilometers 0.375÷1/8×25/24 2.6÷5/3 1/5÷（2/3+1/5）×15 3/8×8÷3/8×8 6.8×8/25+0.32×3.2 （7/12+11/18）÷5/36 0.375÷1/8×25/24 2.6÷5/3 1/5÷（2/3+1/5）×15 3/8×8÷3/8×8 6.8×8/25+0.32×3.2 （7/12+11/18）÷5/36 To prove an equation What can be simple should be simple

A 10 meter long rope, the first use of 1 / 5, the second use of 1 / 5 meters, there are (6.4) meters left
Two thirds of an hour and one third of two hours are (80) minutes
The 1 / 9 of 7 meters is as long as the 7 / 9 of (1) meters
5 / 7 of (14.7) tons is 10.5 tons
A car can travel 30 kilometers in 2 / 5 hours, and (25) kilometers in 20 minutes
If a car runs 30 kilometers in 2 / 5 hours, it takes (1 / 3) hours to travel 25 kilometers
0.375÷1/8×25/24=25/8
2.6÷5/3=39/25
1/5÷（2/3+1/5）×15=1/65
3/8×8÷3/8×8=1
6.8×8/25+0.32×3.2=16/5
（7/12+11/18）÷5/36=43/5
To convert a fraction into a decimal is to divide the numerator by the denominator!
0.375÷1/8×25/24
=375/1000÷1/8×25/24
=3/8×8×25/24
=3×25/24
=25/8
2.6÷5/3
=26/10÷5/3
=13/5÷5/3
=13/5×3/5
=39/25
1/5÷（2/3+1/5）×15
=1/5÷（10/15+3/15）×15
=1/5÷13/15×15
=1/5×15/13×15
=3/13×15
=45/13
3/8×8÷3/8×8
=3/8×8×8/3×8
=3×8/3×8
=8×8
=64
6.8×8/25+0.32×3.2
=68/10×8/25+32/100×32/10
=34/5×8/25+8/25×16/5
=272/125+128/125
=400/125
=16/5
（7/12+11/18）÷5/36
=（21/36+22/36）÷5/36
=43/36÷5/36
=43/36×36/5
=43/5
According to the recursive equation you said~

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