1. Find `321 * 78`

Solution:

	2	1			`larr`	Carry of `321xxcolor{green}{7}`
	2	1			`larr`	Carry of `321xxcolor{red}{8}`
		3	2	1
		×	7	8
	2	5	6	8	`larr`	`color{red}{321xx8}`
2	2	4	7		`larr`	`color{green}{321xx7}`
2	5	0	3	8	`larr`	Product

Multiplication steps

Step-1 : `321xx8=?` `8xx1=8.``:.` put down `8` `8xx2=16.``:.` put down `6` and carry `1` `8xx3=24+1=25.``:.` put down `5` and carry `2`

Step-2 : `321xx7=?` `7xx1=7.``:.` put down `7` `7xx2=14.``:.` put down `4` and carry `1` `7xx3=21+1=22.``:.` put down `2` and carry `2`

So, `321xx78=25038`

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2. Find `598.5 * 2.3`

Solution:

In 598.5 there are 1 decimal places
In 2.3 there are 1 decimal places
So, total decimal places `=1+1=2`

Ignore the decimal places and multiply the numbers

	1	1	1	1		`larr`	Carry of `5985xxcolor{green}{2}`
	1	2	2	1		`larr`	Carry of `5985xxcolor{red}{3}`
		5	9	8	5
			×	2	3
	1	7	9	5	5	`larr`	`color{red}{5985xx3}`
1	1	9	7	0		`larr`	`color{green}{5985xx2}`
1	3	7	6	5	5	`larr`	Product

Multiplication steps

Step-1 : `5985xx3=?` `3xx5=15.``:.` put down `5` and carry `1` `3xx8=24+1=25.``:.` put down `5` and carry `2` `3xx9=27+2=29.``:.` put down `9` and carry `2` `3xx5=15+2=17.``:.` put down `7` and carry `1`

Step-2 : `5985xx2=?` `2xx5=10.``:.` put down `0` and carry `1` `2xx8=16+1=17.``:.` put down `7` and carry `1` `2xx9=18+1=19.``:.` put down `9` and carry `1` `2xx5=10+1=11.``:.` put down `1` and carry `1`

Rewrite the answer with 2 decimal places (from the right) = `1376.55`

So, `598.5xx2.3=1376.55`

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