สร้างกราฟ

we can create a chart with the following specifications:
Y-axis: $xx.
x-axis : 
graph $yy for 20*$yy and
graph  $yy1 for 240*$yy1 and
graph $yy3 for  60*$yy3 and
graph  $yy6 for 40*$yy6 and
the first data starting from the value of $age

Generate a chart using Chart.js library in a PHP environment. It creates a line chart showing the progression of a value over time, broken down into different intervals of time (in years) and values (in dollars).

The chart has four lines: the first line is labeled $xx and represents the value that is increasing over time; the second line is labeled $yy and shows how much of the value increase occurs each year; the third line is labeled $yy1 and shows how much of the value increase occurs every 240 years; and the fourth line is labeled $yy3 and shows how much of the value increase occurs every 60 years.

The data for the chart is generated dynamically based on input parameters, such as the initial value of $xx, the age of the person at which the chart starts, and the amount of increase in value that occurs in each interval. The chart is displayed in a canvas element on the page.

สร้างโปรแกรม form calculate

create form HTML+ JavaScript when submit  will calculate and create table on column topic this 
1. date
2. topic
3. premium net
4. stamp (= 0.4%* premium net) and round up
5. summation of 3. and 4.
6. vat (=7% of 5.)
7. total (= 5.+6.)
8. 1% of 5.
9. pay (=7.- 8.)
10.Add function as follows Able to add new data continuously, display unlimited rows and press calculate at once.
11.generate last row for summation value of each column.
12.all value have 2 decimal

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continue above code because you lost response.