Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> e1c69dfd1f0b6ea634c362e21e21e5c0ae48b5113a5855b79d7796722c9832cb:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^