689÷34= 1 105÷55= 504×32= 358÷25 538÷33=

986÷29= 13320÷70= 603×36= 8 12÷57= 860÷30=

647÷27= 786÷94= 689÷2 1= 783÷58= 45×368=

750×40= 188×25= 2704÷26= 343÷32= 4800÷600

2700÷300 986÷29= 25×480= 905÷45= 450×78=

899÷36= 367÷29= 99007÷45 7403÷68= 864÷57=

562+865 528+462 952-653 965+652 562*56 5 13*56 2565-545 432-85 2 132+52 222- 15 5258* 552 422+52 452 1 -655 424+536 524-855 56+578 452*54 854-465 552+652 465-52 4562-565 156*56 6 125+46 446* 58 125+65 123+665 1 22-45 135-62 123+56 452- 125 589-69 623+533 958-652 364*59

That's all. In fact, if you want to do it, just buy a reference book.